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Hot & Humid Today
Chance of a late afternoon/evening T-Storm
Some Heat Advisories
Warm & Humid Tonight
Last Complete Site Update: 8/06 - 6:56 AM
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Active Hazards, Advisories, and/or warnings
Heat Advisories for SE NH, much of MA for Today
None
None
If the alert below is flashing, then the warnings/advisories above are active. Use those links to go to that hazard page.
The first week of August hangs at the very top of summer,
like the highest seat of a Ferris wheel when it pauses in its turning.
- Natalie Babbitt.
Today’s Weather at a Glance
Updated Every Morning and as Needed Through the Day
(Averages Across Southern NH)
88Degrees
High Temperature
0%
Probability of Precipitation - Daytime
71Degrees
Low Temperature
30%
Probability of Precipitation - Nighttime
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Today in Peterborough, NH at a Glance
Today in Nashua, NH at a Glance
Your Daily Forecast - Three Days at a Time
Monday/Monday Night - August 10
Nashua - East
Peterborough - Central/West
Tuesday/Tuesday Night - August 11
Nashua - East
Peterborough - Central/West
Wednesday/Wednesday Night - August 12
Nashua - East
Peterborough - Central/West
Thursday/Thursday Night - August 6
Nashua - East
Mostly sunny and hot, with a high near 90. Heat index values as high as 97. Calm wind becoming southwest around 5 mph in the afternoon.
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 11pm. Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 20%.
Peterborough - Central/West
Mostly sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon.
A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 11pm. Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 70. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday/Friday Night - August 7
Nashua - East
Sunny and hot, with a high near 93. Heat index values as high as 99. Calm wind becoming west around 5 mph in the afternoon.
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 70. Calm wind.
Peterborough - Central/West
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 88. Calm wind becoming west around 5 mph.
Patchy fog. Otherwise, mostly cloudy, with a low around 68. Calm wind.
Saturday/Saturday Night - August 8
Nashua - East
A 30 percent chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 90. Light southwest wind increasing to 5 to 10 mph in the afternoon.
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70.
Peterborough - Central/West
A 30 percent chance of showers and thunderstorms after 3pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon.
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68.
Sunday/Sunday Night - August 9
Nashua - East
Sunny and hot, with a high near 90.
Mostly clear, with a low around 67.
Peterborough - Central/West
Sunny, with a high near 84.
Mostly clear, with a low around 64.
Current Weather Readings in Peterborough, NH
Time of the readings below: 6 Aug 2026 3:46 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:
89.2°F (0.5)
High Temperature:
89.7 at 2:30 PM
Low Temperature:
65.9 at 6:19 AM
Precipitation Today:
0.00 inches
Current Dewpoint:
74.4°F (-0.9)
Highest Heat Index Reading:
101.9 at 2:31 PM
Current Windspeed:
1 MPH (1)
Barometric Trend:
Falling Slowly
Hours of Daylight Today:
14:16
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 & Mosquito Outlook for Southern NH
Rich's Weather Discussion
New Hampshire/North Briefing
Massachusetts/South Briefing
At this moment: 8/06 - 6:57 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:
None
Mostly sunny and warm to start the day here in the Monadnocks. Dew Point temps are already in the uncomfortable range and will only get worse as the day progresses. It should be dry all day with a slight chance of thunderstorms this afternoon and evening. There is a heat advisory active in SE New Hampshire, and then as you go south, most of MA to NYC is under that heat advisory. It will continue to be warm and humid through Saturday, but Sunday might feel a bit better. Weekend details will be forthcoming in tonight’s "Every Thursday Weekend Outlook" e-mail. Sign up at the bottom of any page.
Warm, humid summer weather will continue across New England through the weekend as a large area of high pressure remains in control. Afternoon temperatures will climb into the upper 80s and lower 90s in many inland locations, with humidity making it feel closer to the middle 90s in parts of southeastern New Hampshire. There will also be a chance of scattered thunderstorms each afternoon through Saturday. While not everyone will see a storm, any that develop could become strong, producing damaging wind gusts and very heavy precipitation. A cold front is expected to move through on Tuesday, bringing cooler and less humid weather for the middle of next week.
From the Weather Channel:
When we told you yesterday about wildfires in France so intense that long-forgotten second world war munitions dumps started exploding, I'm guessing you assumed that would be the week's only story about military-grade explosives and Europe's crushing summer heat. So did I - until the Romanian navy spent Monday blowing up a riverbed in a last-ditch effort to keep the power on. It happened in the Danube, which runs nearly 1,800 miles from Germany's Black Forest to the Black Sea, touching more countries than any other river on Earth. Severe drought has dropped water levels low enough to force partial shutdowns at Romania's Cernavod?É nuclear plant, which relies heavily on the river for cooling. To avert a full power grid collapse, naval forces detonated 180 kilograms of explosives to clear rock formations, allowing engineers to construct a temporary dam and route the remaining water toward the reactor's intake channels.
Zoom out: It's not just the Danube. Heat and drought have pushed Europe's great rivers below the levels they need to do the jobs quietly built around them, such as cooling reactors, spinning turbines, and carrying freight, and the costs are landing on national economies from Germany to Serbia. With little meaningful rain in the forecast, this story, which demonstrates just how fast things can go south when drought meets the grid, is one that we're likely going to be paying attention to for many weeks to come.
Check out the enhanced "Todays Weather at a Glance" section above.
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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.
Looking for Weather News from Across the globe, plus more local weather info? Look here.
Note: When you move your cursor over an image, the image fades. Click on the image and that opens a lightbox view that expands the image and allows you to click through all of the images in a section.
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On this day in history:
On this day in 1790, Congress authorized a fleet of 10 boats to chase down smugglers and collect tariffs along the coast. That little squadron, the Revenue Cutter Service, eventually became the U.S. Coast Guard, which turns 236 today.
Latest site updates and additions:
Find the August Almanac Here
Hurricane Season began on June 1st - Details and forecasts can be found here.
07/17 - Find the Mosquito Outlook in the Heath Section. Added Mosquito forecast for Nashua
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: 07/30 - Next Update: 08/16 (or thereabouts)
Weather Summaries and Full Area Forecast Discussions - North (Edited)
Summary - Northern New England - New Hampshire and Maine
Summary:
Warm, humid summer weather will continue across New England through the weekend as a large area of high pressure remains in control. Afternoon temperatures will climb into the upper 80s and lower 90s in many inland locations, with humidity making it feel closer to the middle 90s in parts of southeastern New Hampshire. There will also be a chance of scattered thunderstorms each afternoon through Saturday. While not everyone will see a storm, any that develop could become strong, producing damaging wind gusts and very heavy precipitation. A cold front is expected to move through on Tuesday, bringing cooler and less humid weather for the middle of next week.
Key Messages:
- Heat and humidity build through late week and persist through the weekend as a subtropical ridge of high pressure drives the weather pattern across New England.
- There will be daily chances for thunderstorms today through Saturday. Coverage will be limited, but a few storms could become strong and produce localized torrential precipitation.
What has changed since the last Forecast Update?
No significant changes with this forecast update.
What this means for you:
If you have outdoor plans through the weekend, be prepared for hot, muggy conditions and stay alert for developing afternoon thunderstorms. Heat will be most noticeable across inland southern New Hampshire, where Heat Advisories remain in effect. Storms will be scattered rather than widespread, but any storm that forms could produce strong winds and localized areas of very heavy precipitation. Cooler and more comfortable weather is expected to arrive after a cold front moves through early next week.
Click the Open/Close Button to Display the Full Edited Area Forecast Discussion
**Area Forecast Discussion**
**National Weather Service Gray ME**
**638 AM EDT Thursday, August 6, 2026**
**What Has Changed**
No significant changes since the previous forecast cycle.
**Key Messages**
1. Heat and humidity build through late week and persist through the weekend as a subtropical ridge of high pressure drives the weather pattern across New England.
2. There will be daily chances for thunderstorms today through Saturday. Coverage will be limited, but a few storms could become strong and produce localized torrential precipitation.
**Discussion**
**Key Message 1 Description**
The Bermuda High will continue expanding toward the Eastern Seaboard through the weekend, allowing warm and humid conditions to remain in place across the region.
High temperatures today and Friday will reach the upper 80s to lower 90s across areas south of the mountains and away from the immediate coastline. Increased cloud cover on Saturday should hold temperatures mainly in the upper 80s. While these temperatures are typical for August, dew point values in the 60s and lower 70s will make it feel much more humid.
The heat index, or what the temperature feels like when humidity is included, is expected to approach the middle 90s today across parts of southeastern New Hampshire. Because of this, a Heat Advisory remains in effect. Additional Heat Advisories may be needed on Friday and could include a larger area.
Temperatures are expected to remain above average through Sunday and Monday, although somewhat lower humidity should help keep the heat index from climbing as high. Overnight temperatures will remain on the warm side, with most locations dropping into the 60s each night.
A stronger cold front is expected to move through by Tuesday, bringing a return to cooler temperatures for the remainder of next week.
**Key Message 2 Description**
The overall weather pattern has changed very little over the past day, but higher resolution forecast models are beginning to provide more detail about thunderstorm development.
A deep southwesterly flow will transport abundant moisture into the region, with atmospheric moisture levels supportive of heavy precipitation. Dew point values climbing into the upper 60s to around 70, combined with daytime heating, will create moderate atmospheric instability, known as CAPE, Convective Available Potential Energy. CAPE measures the amount of energy available for thunderstorms to develop. Values are expected to range from 1500 to 2000 joules per kilogram, which can support stronger storms.
At the same time, wind shear of 25 to 30 knots, the change in wind speed and direction with height, will provide enough organization for a few stronger thunderstorms. However, the lack of a strong triggering mechanism, known as forcing, will limit how many storms actually develop.
Current high resolution forecast models suggest only isolated showers and thunderstorms. However, any storm that does develop could produce strong wind gusts and torrential precipitation. The High Resolution Ensemble Forecast, HREF, indicates localized areas where precipitation totals of 1.5 to 2 inches are possible.
Saturday currently appears to offer the greatest chance for more widespread showers and thunderstorms as the favorable combination of heat, humidity, instability, and a cold front comes together. Forecast guidance from Colorado State University machine learning also highlights Saturday as a day with potential for severe weather.
There is still uncertainty regarding how the day unfolds. Some forecast guidance suggests showers during the morning could reduce afternoon heating, limiting thunderstorm development later in the day. This type of uncertainty is common when the atmosphere is favorable for storms but lacks a strong triggering mechanism. Forecasters will continue monitoring new model data over the next several forecast cycles.
Early next week, global forecast models continue to show the weather pattern shifting to **zonal flow**, meaning the jet stream will move more directly from west to east instead of following a more amplified north to south pattern. This transition should bring cooler temperatures and lower humidity. Even so, the overall pattern will remain somewhat unsettled, so there will continue to be chances for afternoon showers and thunderstorms.
Weather Summaries and Full Area Forecast Discussions - South (Edited)
Summary - Southern New England - Massachusetts/Northern CT/Rhode Island
Summary:
Hot and increasingly humid weather will settle across southern New England through at least Friday, with the possibility of lingering into the weekend. Heat index values will approach or exceed 100 degrees in some locations, especially across inland valleys, while warm overnight temperatures will provide little relief. Isolated afternoon and evening thunderstorms remain possible each day, with the greatest chance on Saturday. Some storms could produce heavy rainfall, gusty winds, frequent lightning, and localized flooding.
Key Messages:
- Heat and humidity climb to Advisory level today and linger through Friday, possibly into the weekend.
- Pop up afternoon and evening thunderstorms remain a daily threat, but are most likely Saturday, with a lower chance on Sunday. More unsettled weather may return early next week, along with continued high humidity.
What has changed since the last Forecast Update?
The forecast remains on track. Heat Advisories remain in effect from 11 AM today through 8 PM Friday for most of southern New England, excluding the eastern slopes, Cape Cod, and the Islands.
What this means for you
Be prepared for dangerous heat, especially if you spend time outdoors or do not have access to air conditioning. The combination of high temperatures and high humidity will make it feel much hotter than the actual air temperature, and overnight conditions will remain uncomfortable. Keep an eye on the sky during the afternoon and evening for isolated thunderstorms, particularly on Saturday, as slow moving storms could bring brief but intense rainfall and localized flooding.
Click the Open/Close Button to Display the Full Edited Area Forecast Discussion
**Area Forecast Discussion, National Weather Service Boston/Norton MA**
**420 AM EDT Thursday, August 6, 2026**
**What Has Changed**
The forecast remains on track. Heat Advisories remain in effect from 11 AM today through 8 PM Friday for most of southern New England, excluding the eastern slopes, Cape Cod, and the Islands.
**Key Messages**
* Heat and humidity climb to Advisory level today and linger through Friday, possibly into the weekend.
* Pop up afternoon and evening thunderstorms remain a daily threat, but are most likely Saturday, with a lower chance on Sunday. More unsettled weather may return early next week, along with continued high humidity.
**Discussion**
**Key Message 1, Heat and humidity climb to Advisory level today and linger through Friday, possibly into the weekend.**
A Bermuda High pressure system will continue building over the western Atlantic Ocean, allowing warm, humid air to flow north into southern New England.
Temperatures and humidity have already begun increasing early this morning. Temperatures have risen to around 73 degrees while dew points, a measure of how much moisture is in the air, have climbed to around 71 degrees. Both will continue rising today and Friday.
Afternoon high temperatures will likely reach around 90 degrees, while dew points near 75 degrees will make it feel much hotter. Heat index values, the combination of temperature and humidity that represents how hot it feels, are expected to reach the middle to upper 90s and could briefly approach 100 degrees.
The greatest chance of heat index values reaching 100 degrees or higher will be across the Connecticut River Valley and Merrimack River Valley. Winds descending the hillsides, known as downslope winds, can warm and dry slightly as they move downhill, helping temperatures climb even higher in these areas.
There is still some uncertainty for other locations because afternoon cloud cover and isolated thunderstorms could temporarily limit daytime heating.
Little relief is expected tonight. Overnight temperatures will remain between 71 and 73 degrees while dew points stay near 70 degrees. Even overnight, it will continue to feel like 77 to 80 degrees. These warm nighttime conditions can be especially dangerous for people without adequate cooling, particularly in urban areas.
A Heat Advisory remains in effect from 11 AM today through 8 PM Friday. Later forecasts may extend the advisory into Saturday if the dangerous heat continues.
**Key Message 2, Pop up afternoon and evening thunderstorms remain a daily threat, but are most likely Saturday, with a lower chance on Sunday. Unsettled weather may return early next week, along with continuing high humidity.**
Several weak disturbances in the upper atmosphere will move across New England through the weekend. Combined with the heat, humidity, and enough atmospheric instability, these features are expected to trigger isolated afternoon and evening showers and thunderstorms each day, with the greatest chance on Saturday.
While widespread severe weather is not expected, any storm that develops could produce frequent lightning, gusty winds, and torrential rainfall. Atmospheric moisture levels are expected to be very high, with precipitable water values around 2.0 inches. This is a measure of how much moisture is available in the atmosphere to produce heavy rain.
Forecast models also indicate weak winds higher in the atmosphere, known as weak mid level steering flow. This means thunderstorms may move slowly or repeatedly track over the same locations, a process called training. Because southern New England has already received significant rainfall during the past week, any slow moving storm with heavy precipitation could produce localized flooding.
Early next week, additional upper level disturbances, known as shortwaves, along with a trailing cold front, will bring more chances for showers Monday night into Tuesday. The frontal passage, often referred to by meteorologists as FROPA, may provide modest relief from the heat early next week, although humidity is expected to remain elevated through the middle of the week.
Countdown to Autumn
Autumn Begins on: September 23, 2026 at 2:05 AM EDT
92Days18Hours28Mins13Secs
Five Day Daily Temperature Run - Peterborough, NH
Updated Every Morning
Normal Daily Averages
High Temperature: 78 Degrees - Low Temperature: 56 Degrees
(Tip: Place your cursor over the bar below to see the number)
Weather News/Headlines of Interest
Flash flood threat returns as storms drench central, eastern US
A tornado hit the same house twice, and it's not unprecedented
Spokane wildfires destroy more than 700 structures, force up to 67,000 to evacuate
Typhoon Dolphin barrels towards China with damaging winds and flooding
Deadliest animal in every US state revealed, from moose and bears to dogs
Hikers Are Reminded to Be Aware, Prepared, and Responsible When Heading out in New Hampshire
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