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Last Complete Site Update: 6/10 - 7:19 AM
Weather for New England and the Northeast
Updated Twice per day
Delivering Weather Forecasts for New England for 27+ years
Active Hazards, Advisories, and/or warnings
Heat Advisory in Effect Thursday in Western MA. Find the text in the Daily Forecast Section.
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If the alert below is flashing, then the warnings/advisories above are active. Use those links to go to that hazard page.
"In early June the world of leaf and blade and flowers explodes,
and every sunset is different."
- John Steinbeck, The Winter of Our Discontent
Today’s Weather at a Glance
Updated Every Morning and as Needed Through the Day
(Averages Across Southern NH)
88Degrees
High Temperature
30%
Probability of Precipitation - Daytime
63Degrees
Low Temperature
50%
Probability of Precipitation - Nighttime
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Your Daily Forecast - Three Days at a Time
Heat Advisory:
Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Boston/Norton MA
121 AM EDT Wed Jun 10 2026
CTZ002>004-MAZ002-003-008>011-102200- /O.NEW.KBOX.HT.Y.0002.260611T1600Z-260613T0000Z/ Hartford CT-Tolland CT-Windham CT-Western Franklin MA-Eastern Franklin MA-Western Hampshire MA-Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA- Including the cities of Putnam, Orange, Greenfield, Chesterfield, Vernon, Blandford, Charlemont, Amherst, Union, Hartford, Windsor Locks, Northampton, Willimantic, and Springfield
121 AM EDT Wed Jun 10 2026
...HEAT ADVISORY IN EFFECT FROM NOON THURSDAY TO 8 PM EDT FRIDAY...
* WHAT...Temperatures well into the 90s combined with prolonged high humidity will send heat index values to near 100 Thursday and up to 102 Friday.
* WHERE...Franklin County, Hampshire County, Hampden County, Hartford CT, Tolland CT, and Windham CT.
* WHEN...From noon Thursday to 8 PM EDT Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Monday/Monday Night - June 15
Nashua - East
Peterborough - Central/West
Tuesday/Tuesday Night - June 16
Nashua - East
Peterborough - Central/West
Wednesday/Wednesday Night - June 10
Nashua - East
Partly sunny, with a high near 89. Calm wind becoming southwest around 5 mph in the afternoon.
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 64. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Peterborough - Central/West
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 86. Calm wind becoming southwest around 5 mph in the afternoon.
A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 63. South wind around 5 mph becoming calm. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday/Thursday Night - June 11
Nashua - East
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny and hot, with a high near 93. Heat index values as high as 99. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 9pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 30%.
Peterborough - Central/West
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 89. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 10pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 30%.
Friday/Friday Night - June 12
Nashua - East
Patchy fog before 8am. Otherwise, partly sunny and hot, with a high near 90. Calm wind becoming east around 5 mph in the afternoon.
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Peterborough - Central/West
A 30 percent chance of showers after 5pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 89. Calm wind becoming southeast around 5 mph.
Showers likely, mainly between 10pm and 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Saturday/Saturday Night - June 13
Nashua - East
Peterborough - Central/West
Sunday/Sunday Night - June 14
Nashua - East
Peterborough - Central/West
Current Weather Readings in Peterborough, NH
Time of the readings below: 10 Jun 2026 12:52 PM
(FYI: The number in parentheses is the change in the last hour)
(Note: My weather Instruments are Offline from Midnight Wednesday to 7AM Thursday for system Back ups.)
Current Temperature:
86.0°F (1.5)
High Temperature:
86.0 at 12:52 PM
Low Temperature:
59.5 at 5:07 AM
Precipitation Today:
0.00 inches
Current Dewpoint:
70.0°F (1.9)
Highest Heat Index Reading:
90.9 at 12:51 PM
Current Windspeed:
1 MPH (-1)
Barometric Trend:
Falling Rapidly
Hours of Daylight Today:
15:17
Link to my Active Weather Instruments
Information for New England
Seven Day Temperature Outlook - Manchester NH & Southern New England
Current Northeast Radar
Expected Temperature Range
Health - The Five Day Allergy Outlook for Southern NH
Rich's Weather Discussion
New Hampshire/North Briefing
Massachusetts/South Briefing
At this moment: 6/10 - 7:19 AM
Notes from Rich:
What is the 'Regular’ Schedule.
Weekdays: Morning updates each day before 8AM, Evening Updates before 7PM.
On Weekends: Perhaps a bit later. I like to sleep in.
Every Thursday morning I post the daily forecast through the weekend.
Upcoming Site Update Schedule Changes:
I will be performing some system updates today. The current weather readings will be affected, so check the timestamp to make sure they are the most recent.
It will be warmer today, more clouds, and more humidity. There are some Heat Advisories active to our south in westhern MA on Thursday. This humidity will drive afternoon showers and thunderstorms each day for the rest of the week. Somewhat cooler air arrives for the weekend.
Hotter and much more humid weather is settling into New England through Friday, with heat index values reaching the mid 80s to mid 90s in many locations. Daily chances for afternoon and evening showers and thunderstorms continue through Thursday, and some storms could produce very heavy rainfall due to the unusually high amount of moisture in the atmosphere. While widespread severe weather is not expected, isolated stronger storms cannot be ruled out. Temperatures cool somewhat closer to seasonal levels this weekend, but unsettled weather with periodic shower chances may continue into early next week.
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What information can you find on my site, and where is it?
The History Section has a lot of history to share, and I will be sharing video on this page from time to time. Updated every day with new weather history.
Find beach and hiking, and Ski information as well as travel info for the USA in the Travel and Leisure Section.
Find all Tropical Tracking/Hurricane information on the Tropics Page.
Find the current Drought Maps here. Now showing a map for each New England State.
Looking for Radar? Try the Radar Page.
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On this day in history:
On this day in 1935, Alcoholics Anonymous was founded in Akron, Ohio, after a New York stockbroker fighting to stay sober realized the best way to resist a drink was to help another alcoholic. He found a local surgeon, and the two built a fellowship that now counts some two million members worldwide.
Latest site updates and additions:
Find the June Almanac Here
Hurricane Season began on June 1st - Details and forecasts can be found here.
06/01 - Find the Mosquito Outlook in the Heath Section.
05/02 - Find the Summer 2026 Outlook for the USA here.
05/01 - The Hampton Beach Report returns! Updated daily.
In the Health Section above, starting April 7, you will find the Allergy Forecasts for Southern NH.
You can find my weather Reading via Weather Underground here: Peterborough, NH Readings
Catch Weather News Headlines and links here.
I have updated Rain/Snowfall totals here.
Drought information updates every Other Thursday evening. Last update: 5/21 - Next Update: 06/11
Weather Summaries and Full Area Forecast Discussions - North (Edited)
Summary - Northern New England - New Hampshire and Maine
Summary:
Hotter and much more humid weather is settling into New England through Friday, with heat index values reaching the mid 80s to mid 90s in many locations. Daily chances for afternoon and evening showers and thunderstorms continue through Thursday, and some storms could produce very heavy rainfall due to the unusually high amount of moisture in the atmosphere. While widespread severe weather is not expected, isolated stronger storms cannot be ruled out. Temperatures cool somewhat closer to seasonal levels this weekend, but unsettled weather with periodic shower chances may continue into early next week.
Key Messages:
- Increasing humidity is going to pose at least a moderate heat risk in most locations through Friday.
- Afternoon showers and thunderstorms may pose an excessive rainfall risk due to the elevated moisture and weak upper level flow today and Thursday.
- Other than a mostly dry Sunday, daily chances of showers return into early next week, but confidence is low. Temperatures trend closer to normal, perhaps a few degrees above.
What has changed since the last Forecast Update?
No major changes were needed elsewhere in the forecast.
What this means for you:
The biggest impacts over the next few days will be increasing humidity, periods of uncomfortable heat, and the potential for localized flooding from slow-moving thunderstorms. Outdoor activities may be affected by lightning and brief downpours during the afternoon and evening hours. The Merrimack Valley has the greatest chance of experiencing heat levels that approach advisory criteria on Thursday. While the weekend will be somewhat cooler, occasional showers may continue.
Click the Open/Close Button to Display the Full Edited Area Forecast Discussion
Area Forecast Discussion
National Weather Service Gray ME
634 AM EDT Wednesday June 10, 2026
**What Has Changed**
The aviation section was updated for the 12 PM EDT TAF forecast package. No major changes were needed elsewhere in the forecast.
**Key Messages**
1. Increasing humidity is going to pose at least a moderate heat risk in most locations through Friday.
2. Afternoon showers and thunderstorms may pose an excessive rainfall risk due to the elevated moisture and weak upper level flow today and Thursday.
3. Other than a mostly dry Sunday, daily chances of showers return into early next week, but confidence is low. Temperatures trend closer to normal, perhaps a few degrees above.
**Synopsis**
**Key Message 1 Description**
The increase in humidity will be noticeable today as a very moist air mass moves into the region. Conditions will only slowly begin drying out from north to south on Thursday. Much of the forecast area is expected to experience heat index values between 85 and 95 degrees, with the hottest readings likely in the Merrimack Valley of New Hampshire. That area remains the leading candidate for a heat advisory on Thursday, although conditions currently appear marginal for issuance.
**Key Message 2 Description**
Increasing heat and humidity will bring daily chances for afternoon and evening showers and thunderstorms through Thursday. The risk for widespread severe weather remains fairly low despite the hot conditions. This is because the atmosphere lacks strong wind shear, which is the change in wind speed and direction with height that often helps storms organize and intensify. In addition, temperature changes with height are not particularly favorable for severe storm development.
Even so, an isolated strong or marginally severe thunderstorm cannot be ruled out this afternoon and evening, and again Thursday afternoon, especially across southern areas.
A more significant concern is the very high moisture content in the atmosphere. Atmospheric moisture levels, measured by a meteorological parameter known as precipitable water, are expected to approach 2 inches in some locations today and Thursday. Combined with relatively weak winds aloft, this may allow thunderstorms to move slowly or repeatedly track over the same locations. As a result, localized flash flooding is possible where the heaviest rainfall occurs.
**Key Message 3 Description**
By Friday night, an area of higher pressure aloft, known as a 500 millibar ridge, will weaken as an upper-level low pressure system moves east across northern Canada. This will allow weather systems to move more directly from west to east across the Northeast.
A cold front is expected to move through the region Friday evening, bringing another chance for showers and thunderstorms. Additional showers may linger through the weekend as the associated surface low pressure system slowly moves into the Canadian Maritimes.
Forecast guidance continues to show considerable uncertainty beyond Saturday. While Sunday currently appears to be the driest day of the period, unsettled weather with occasional shower chances may continue into early next week. Temperatures are expected to trend closer to seasonal averages, with readings potentially remaining a few degrees above normal.
Weather Summaries and Full Area Forecast Discussions - South (Edited)
Summary - Southern New England - Massachusetts/Northern CT/Rhode Island
Summary:
A stretch of hot and increasingly humid weather is expected across southern New England through Friday, with the greatest heat risk across interior Massachusetts and northern Connecticut. Heat Advisories are now in effect from noon Thursday through 8 PM Friday for those areas. Showers and thunderstorms return later today and tonight, with the potential for some storms to become severe Thursday evening. Conditions gradually improve over the weekend as humidity decreases, although there remains uncertainty regarding additional rain chances.
Key Messages:
- Chances for showers and thunderstorms return this afternoon into tonight.
- Heat Advisories have been issued across interior Massachusetts and Connecticut Thursday into Friday. Afternoon and evening thunderstorms remain possible Thursday and Friday.
- Temperatures remain warm with decreasing humidity throughout the weekend, while uncertainty remains high regarding potential rain showers.
What has changed since the last Forecast Update?
Heat Advisories have been issued for interior Massachusetts and northern Connecticut from noon Thursday until 8 PM Friday. Confidence has increased that a few thunderstorms Thursday evening could become severe.
What this means for you
If you live in interior Massachusetts or northern Connecticut, prepare for dangerous heat and humidity Thursday and Friday. Afternoon temperatures in the 90s combined with high humidity will make it feel near or above 100 degrees at times, especially in the Connecticut River Valley. Limit strenuous outdoor activities during the hottest part of the day, stay hydrated, and seek air conditioning when possible. Thunderstorms today through Friday may produce heavy rainfall, strong wind gusts, and isolated severe weather, particularly Thursday evening. While the weekend looks less humid, confidence remains lower regarding additional shower chances.
Click the Open/Close Button to Display the Full Edited Area Forecast Discussion
**Area Forecast Discussion**
**National Weather Service Boston/Norton MA**
**734 AM EDT Wednesday, June 10, 2026**
**What Has Changed**
Heat Advisories have been issued for interior Massachusetts and northern Connecticut from noon Thursday until 8 PM Friday. Confidence has increased that a few thunderstorms Thursday evening could become severe.
**Key Messages**
* Chances for showers and thunderstorms return this afternoon into tonight.
* Heat Advisories have been issued across interior Massachusetts and Connecticut Thursday into Friday. Afternoon and evening thunderstorms remain possible Thursday and Friday.
* Temperatures remain warm with decreasing humidity throughout the weekend, while uncertainty remains high regarding potential rain showers.
**Discussion**
**Key Message 1, Chances for showers and thunderstorms return this afternoon into tonight**
A warm front associated with a low pressure system moving through the Great Lakes and southern Ontario will move across southern New England later today and tonight. This will bring showers and potentially thunderstorms to the region.
The risk of severe weather remains relatively low today, but not zero. Forecast guidance from the CSU Machine Learning severe weather model indicates a 5 to 15 percent chance of damaging wind across western Massachusetts and Connecticut. Similar signals are being shown by the HRRR Neural Network forecast model, with the greatest threat for strong winds focused across interior Massachusetts and Connecticut tonight.
As winds shift to the southwest, moisture levels will increase significantly. Dewpoints, which measure the amount of moisture in the air, are expected to rise noticeably. Atmospheric moisture levels, referred to as PWATs or Precipitable Water values, are forecast to reach 1.9 to 2.0 inches across much of southern New England, with localized values up to 2.2 inches possible across central and southern Connecticut early Thursday morning.
Forecast confidence remains lower regarding exactly where thunderstorms will develop. Current guidance continues to focus the heaviest rainfall across northern New England and offshore south of the region. However, any storms that do develop will be capable of producing heavy rainfall because of the abundant moisture available.
**Key Message 2, Heat Advisories have been issued across interior Massachusetts and Connecticut Thursday into Friday. Afternoon and evening thunderstorms remain possible Thursday and Friday**
Confidence continues to increase that heat and humidity will create hazardous conditions Thursday and Friday.
As Wednesdays warm front lifts northward, a prolonged southwest flow will bring very hot and humid air into southern New England. Forecast temperatures several thousand feet above the ground indicate a strong signal for unusually hot weather at the surface.
Dewpoints are expected to reach the upper 60s to lower 70s across much of interior Massachusetts and northern Connecticut. Combined with air temperatures climbing into the lower and middle 90s, heat index values, or what the temperature feels like when humidity is included, will approach 100 degrees Thursday and likely exceed 100 degrees Friday across the Connecticut River Valley.
As a result, Heat Advisories have been issued for northern Connecticut and western Massachusetts from noon Thursday through 8 PM Friday.
Across Rhode Island and eastern Massachusetts, temperatures will generally range from the middle 80s to lower 90s both days. Humidity levels will still be high, producing heat index values in the lower 90s away from the immediate coastline.
Additional Heat Advisories could be needed farther east. A backdoor cold front, which is a cooler air mass moving in from the northeast rather than the west, is expected to move into eastern Massachusetts sometime Friday. This may provide some relief from the heat, but there remains uncertainty regarding how far inland the cooler air will reach.
Overall, moderate heat impacts are expected across much of the region, while major heat impacts are anticipated in the Connecticut River Valley. The risk for heat-related illness will increase for anyone spending extended periods outdoors without adequate hydration or access to cooling.
The increasing heat and humidity, combined with several weak disturbances in the upper atmosphere, will also support a greater chance of showers and thunderstorms Thursday and Friday.
Confidence has increased that some storms Thursday could become severe. CSU Machine Learning guidance now indicates a 15 to 30 percent chance of damaging winds and a 5 to 15 percent chance of small hail across interior areas.
Forecast instability values, known as CAPE, are expected to exceed 1,300 joules per kilogram Thursday evening, with localized values approaching 2,000 joules per kilogram across far western Connecticut. CAPE is a measure of how much energy is available for thunderstorm development. Higher values generally support stronger storms.
Current guidance suggests the strongest storms may weaken as they move eastward, favoring shorter-lived storm cells. Nevertheless, confidence has increased enough for forecasters to upgrade western portions of southern New England from a General Thunderstorm risk to a Slight Risk for severe weather Thursday.
**Key Message 3, Temperatures remain warm with decreasing humidity throughout the weekend, while uncertainty remains high regarding potential rain showers**
A couple of weather fronts are expected to move through the region during the weekend.
The primary impact will be noticeably lower humidity levels. Sunday currently appears to be the drier of the two weekend days.
A few lingering showers remain possible Saturday, but there should also be many dry hours.
Some forecast guidance suggests a weak low pressure system could pass south of New England sometime between Monday and Tuesday. As a result, shower chances remain in the forecast early next week. However, confidence in the timing and extent of any rainfall remains low.
Temperatures are expected to stay warm through the weekend, but the lower humidity should make conditions much more comfortable compared to Thursday and Friday.
Countdown to Summer
Summer Begins on: June 21 2026 at 4:24 AM EDT
91Days20Hours18Mins30Secs
Five Day Daily Temperature Run - Peterborough, NH
Updated Every Morning
Normal Daily Averages
High Temperature: 73 Degrees - Low Temperature: 50 Degrees
(Tip: Place your cursor over the bar below to see the number)
Weather News/Headlines of Interest
Hottest temperatures of the year set to roast more than 100 million across major East Coast cities
Heat, humidity to spur summery conditions, storms in eastern US this week
Downpours to drench millions in the South and Central US amid growing flood threat
Tropical storms Boris and Cristina soak Mexico, Central America with heavy rain and flash flooding
Magnitude 6.1 earthquake reported near Cuba, shaking felt as far as Florida
Magnitude 7.8 earthquake strikes off the coast of the Philippines, triggering tsunami warnings
Boris makes landfall in Mexico; Tropical Storm Cristina may head in as well
Outer Banks home collapses into ocean for first time in months
Man dies after being caught in a rip current on Long Beach Island in New Jersey
More tropical activity brewing in the eastern Pacific after Amanda
Experts identify victims from one of history's most 'catastrophic' Arctic disasters
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