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Chance of a Showers/Storms 
Hot & Humid Tonight

All precipitation ends later tonight
Sunny Saturday - Warm/Hot - Less Humid

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Last Complete Site Update: 6/12 - 6:11 PM

Weather for New England and the Northeast

Updated Twice per day

Delivering Weather Forecasts for New England for 27+ years

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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.
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"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)
92Degrees
High Temperature
50%
Probability of Precipitation - Daytime
62Degrees
Low Temperature
20%
Probability of Precipitation - Nighttime
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Your Daily Forecast - Three Days at a Time

Heat Advisories are active across much of the northeast through Friday.

Find them all here.

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Monday/Monday Night - June 15

Nashua - East

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Showers likely, mainly before 7am. Mostly sunny, with a high near 81. Chance of precipitation is 60%.

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Mostly clear, with a low around 54.

Peterborough - Central/West

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A 30 percent chance of showers before 8am. Mostly sunny, with a high near 75.

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Mostly clear, with a low around 51.

Tuesday/Tuesday Night - June 16

Nashua - East

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Peterborough - Central/West

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Wednesday/Wednesday Night - June 17

Nashua - East

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Peterborough - Central/West

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Thursday/Thursday Night - June 18

Nashua - East

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Peterborough - Central/West

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Friday/Friday Night - June 12

Nashua - East

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A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 64. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 20%


Peterborough - Central/West

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A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 61. Calm wind becoming northwest around 5 mph in the evening.

Saturday/Saturday Night - June 13

Nashua - East

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Sunny, with a high near 89. Northwest wind 5 to 10 mph.

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Mostly clear, with a low around 61. West wind around 5 mph becoming calm.

Peterborough - Central/West

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Sunny, with a high near 85. Northwest wind 5 to 10 mph.

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Mostly clear, with a low around 59. West wind around 5 mph becoming calm.

Sunday/Sunday Night - June 14

Nashua - East

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Partly sunny and hot, with a high near 93. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

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Showers. Low around 59. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

Peterborough - Central/West

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Partly sunny, with a high near 87. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

BlanknightS

Showers, mainly before 2am. Low around 57. South wind 5 to 10 mph. Chance of precipitation is 80%.

Current Weather Readings in Peterborough, NH

Time of the readings below: 13 Jun 2026 4:11 AM

(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: 

70.3°F (-1.3)

High Temperature:

76.7 at 12:04 AM

Low Temperature:

70.3 at 4:11 AM

Precipitation Today:

0.00 inches

Current Dewpoint:

56.2°F (-3.8)

Highest Heat Index Reading:

76.7 at 12:04 AM

Current Windspeed:

1 MPH (-0)

Barometric Trend:

Rising Slowly

Hours of Daylight Today:

15:19

Link to my Active Weather Instruments

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Information for New England

Rich's Weather Discussion

New Hampshire/North Briefing

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Massachusetts/South Briefing

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At this moment: 6/12 - 6:14 PM

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

Man, it is Africa HOT out there today. The dew point has been dancing around the 75 degree mark, which is about as high as it gets in these parts! If you just think for a moment, drive a couple hundred miles south, not really all that far, THIS weather is present through most of the summer months!
I hope we get some rain out of this here in Southern NH. June has been dry.

Heavy downpours and scattered thunderstorms remain the primary concern through this evening, with localized flash flooding possible where storms repeatedly move over the same locations. A few storms may also produce strong wind gusts. Conditions turn less humid this weekend, but temperatures will remain very warm with many inland areas reaching the 80s and lower 90s. Another cold front arrives Sunday with additional showers and a few potentially strong thunderstorms. More seasonable temperatures return next week, along with periodic chances for showers.

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On this day in history:
On this day in 1987, President Ronald Reagan delivered one of his most famous Cold War speeches, challenging Soviet leader Mikhail Gorbachev to "tear down" the Berlin Wall.

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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: 06/11 - Next Update: 06/26 (or thereabouts)
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Weather Summaries and Full Area Forecast Discussions - North (Edited)

Summary - Northern New England - New Hampshire and Maine

Summary:
Heavy downpours and scattered thunderstorms remain the primary concern through this evening, with localized flash flooding possible where storms repeatedly move over the same locations. A few storms may also produce strong wind gusts. Conditions turn less humid this weekend, but temperatures will remain very warm with many inland areas reaching the 80s and lower 90s. Another cold front arrives Sunday with additional showers and a few potentially strong thunderstorms. More seasonable temperatures return next week, along with periodic chances for showers.

Key Messages:
 - Isolated to scattered thunderstorms will bring torrential rainfall through this evening. Slow moving and repeated rounds of storms may cause localized flash flooding within the Flood Watch area. A few storms may also produce strong to damaging wind gusts.
 - Humidity decreases this weekend while temperatures remain warm, with highs in the 80s to lower 90s Saturday and Sunday.
 - A cold front will cross the region Sunday, bringing showers and the potential for isolated strong thunderstorms.
 - High astronomical tides are expected this weekend. More seasonable weather is expected through much of the upcoming work week.

What has changed since the last Forecast Update?
No significant changes. The primary focus through this evening remains isolated to scattered thunderstorms capable of producing torrential rainfall and gusty winds.

What this means for you:
If you are in an area that experiences repeated thunderstorms this evening, be alert for rapidly developing flash flooding, especially in poor drainage areas and near small streams. While widespread severe weather is not expected, isolated strong wind gusts are possible. The weekend will be much less humid, but it will still be very warm, particularly away from the coast. Beachgoers should be aware that ocean water temperatures remain in the 50s even though air temperatures may approach 90 degrees. Coastal communities should also monitor high tide cycles this weekend, as minor coastal flooding is possible in some locations.

Click the Open/Close Button to Display the Full Edited Area Forecast Discussion

Area Forecast Discussion
National Weather Service Gray ME
402 PM EDT Friday, June 12, 2026

**What Has Changed**


No significant changes. The primary focus through this evening remains isolated to scattered thunderstorms capable of producing torrential rainfall and gusty winds.

**Key Messages**

1. Isolated to scattered thunderstorms will bring torrential rainfall through this evening. Slow moving and repeated rounds of storms may cause localized flash flooding within the Flood Watch area. A few storms may also produce strong to damaging wind gusts.

2. Humidity decreases this weekend while temperatures remain warm, with highs in the 80s to lower 90s Saturday and Sunday.

3. A cold front will cross the region Sunday, bringing showers and the potential for isolated strong thunderstorms.

4. High astronomical tides are expected this weekend. More seasonable weather is expected through much of the upcoming work week.

**Synopsis**

**Key Message 1 Description**


An unusually moist air mass remains in place across the region. This mornings weather balloon launch from Gray set a new record for atmospheric moisture for June 12, measuring 1.91 inches of precipitable water, a measure of how much moisture is available in the atmosphere for rainfall.

The atmosphere has become increasingly unstable this afternoon, providing fuel for thunderstorm development. Thunderstorms have remained somewhat isolated due to limited upper level support and weak wind shear, which refers to changing wind speed and direction with height. However, weather models continue to indicate a southwest to northeast corridor where converging winds will help focus additional thunderstorm development through this evening, particularly within the Flood Watch area.

These storms will move slowly and produce very heavy rainfall, with rainfall rates approaching 3 inches per hour. Localized flash flooding is possible, and some locations could experience considerable flash flooding if multiple storms move over the same area. High resolution forecast guidance suggests localized rainfall totals of 3 to 5 inches in as little as three hours.

While widespread severe weather is not expected, some storms could briefly produce strong downburst winds. A downburst occurs when rain cooled air rapidly descends and spreads outward upon reaching the ground, creating sudden damaging wind gusts.

Thunderstorm activity should gradually decrease later this evening as a cold front approaches from the west.

The cold front will move across the region between approximately 8 PM and 2 AM EDT, bringing another opportunity for thunderstorms. Atmospheric instability will decrease during the evening, limiting the overall severe weather threat. However, a few strong storms capable of producing damaging winds remain possible. The greatest concern continues to be additional rounds of heavy rainfall over areas that may have already received significant rain earlier in the evening.

**Key Message 2 Description**

A cold front will move offshore Saturday morning, allowing a drier air mass to move into the region on northwest winds. Dew points, a measure of atmospheric moisture, will fall into the 50s, making conditions feel much more comfortable.

Despite the lower humidity, downslope winds descending from higher terrain will help temperatures climb into the upper 80s to lower 90s south of the mountains.

A Beach Hazard Statement has been issued to highlight cold water safety concerns. Ocean temperatures remain in the 50s, even though air temperatures along the beaches may approach 90 degrees.

Very warm weather continues Sunday, with highs again reaching the 80s and lower 90s while humidity remains relatively comfortable, with dew points generally in the 50s and lower 60s.

**Key Message 3 Description**

Sunday will be another hot day ahead of an approaching cold front moving east from New York State.

High temperatures will reach the middle to upper 80s across interior western Maine, with upper 80s to lower 90s common across New Hampshire. Coastal locations will be somewhat cooler due to increasing southerly winds off the ocean.

Because humidity levels will remain relatively modest, heat index values should stay close to actual air temperatures.

Scattered showers are expected to develop across northern areas during the afternoon before progressing southward toward the coast during the evening. Isolated strong thunderstorms are possible, with gusty winds serving as the primary threat.

Machine learning forecast guidance continues to indicate only a low risk of stronger storms, mainly across New Hampshire and interior western Maine. The latest Storm Prediction Center outlook has shifted the risk area slightly farther north, with a Marginal Risk covering portions of south central New Hampshire and a Slight Risk extending into Cheshire County.

Showers may continue overnight Sunday before ending Monday morning. Overnight low temperatures will generally fall into the 50s.

**Key Message 4 Description**

A broad upper level trough, an area of cooler air and lower pressure aloft, is expected to become established across the Northeast next week. This pattern will bring temperatures back closer to seasonal averages while also supporting occasional chances for showers.

Monday and Tuesday appear mostly dry, but shower chances are expected to increase by the middle and latter part of next week as several frontal boundaries move near or through the region.

Along the coast, high astronomical tides combined with a storm surge of up to one half foot may bring water levels close to minor coastal flood stage Saturday night, especially from Portland and points south.

Weather Summaries and Full Area Forecast Discussions - South (Edited)

Summary - Southern New England - Massachusetts/Northern CT/Rhode Island

Summary:
A warm and less humid weekend is ahead for Southern New England. Isolated to scattered thunderstorms remain possible through this evening, with a few capable of producing damaging wind gusts, frequent lightning, and brief heavy rainfall, especially across western and central Massachusetts and Connecticut. Conditions improve overnight, followed by a mainly dry and warm Saturday and much of Sunday. Another round of showers and thunderstorms is expected Sunday evening into Sunday night as a cold front moves through the region, although the risk for severe weather currently appears low. Cooler, less humid, and more seasonable weather arrives for the first half of next week before a more active weather pattern potentially returns late next week.

Key Messages:
 - Isolated to scattered storms possible through this evening. A few may be strong to severe.
 - Above normal temperatures continue this weekend, though humidity levels drop to more comfortable levels.

What has changed since the last Forecast Update?
The Slight Risk, Level 2 of 5, for severe weather today remains in effect for far western Connecticut and Massachusetts. The chance for severe weather also remains low, but not zero, across eastern Massachusetts and Rhode Island.

What this means for you
If you have outdoor plans this evening, keep an eye on the sky and be prepared to move indoors if thunderstorms develop. While many locations may stay dry, any storm that forms could produce strong wind gusts, lightning, and brief downpours. The weekend overall looks favorable for outdoor activities, with temperatures well into the 80s and lower 90s but noticeably lower humidity than recent days. Another chance for showers and thunderstorms arrives Sunday night, followed by several days of comfortable summer weather early next week.

Click the Open/Close Button to Display the Full Edited Area Forecast Discussion

Area Forecast Discussion
National Weather Service Boston/Norton MA
348 PM EDT Friday, June 12, 2026

**What Has Changed**


The Slight Risk, Level 2 of 5, for severe weather today remains in effect for far western Connecticut and Massachusetts. The chance for severe weather also remains low, but not zero, across eastern Massachusetts and Rhode Island.

**Key Messages**

* Isolated to scattered storms possible through this evening. A few may be strong to severe.

* Above normal temperatures continue this weekend, though humidity levels drop to more comfortable levels.

**Discussion**

**Key Message 1: Isolated to scattered storms possible through this evening. A few may be strong to severe.**


A warm, humid, and unstable air mass remains in place across Southern New England this afternoon and evening. An upper-level disturbance, referred to by meteorologists as a mid-level shortwave trough, is moving across Quebec and helping to trigger showers and thunderstorms.

No major changes have been made to the forecast. Atmospheric conditions remain supportive of scattered storm development, with daytime heating providing the energy needed for thunderstorms to form. Forecast guidance suggests storms may develop along a sea breeze boundary across eastern Southern New England and ahead of an approaching cold front across western Massachusetts and Connecticut during the early evening hours.

Some storms could become strong to severe, especially across western and central portions of Southern New England. The primary threats include gusty to locally damaging winds, lightning, and brief periods of heavy rainfall. Any lingering showers and thunderstorms should move offshore by around midnight.

**Key Message 2: Above normal temperatures continue this weekend, though humidity levels drop to more comfortable levels.**

An unusually warm air mass remains in place across the region this weekend, supported by an area of high pressure in the upper atmosphere.

Afternoon high temperatures will climb well into the 80s, with some locations reaching the lower 90s. While temperatures will be similar to recent days, it will not feel nearly as oppressive because humidity levels will be noticeably lower. Dew points, a measure of atmospheric moisture, are expected to remain in the middle to upper 50s, providing a more comfortable feel.

Dry weather is expected through Saturday and much of Sunday. Moisture and humidity begin increasing later Sunday, bringing the next opportunity for showers and thunderstorms.

**Key Message 3: Showers and thunderstorms Sunday evening and overnight, but the risk for severe weather is low.**

After another very warm to hot day Sunday, a cold front will move through Southern New England Sunday night, increasing the likelihood of showers and thunderstorms.

Winds higher in the atmosphere will strengthen, creating more favorable conditions for organized thunderstorms. However, the overall amount of instability, or storm fuel, appears limited because storms will arrive after sunset and humidity levels are not expected to be especially high.

Machine-learning forecast guidance from both Colorado State University and the National Severe Storms Laboratory indicates less than a 10 percent chance of severe weather Sunday night. While thunderstorms remain likely, the potential for severe storms currently appears low.

Rainfall amounts remain somewhat uncertain. Atmospheric moisture levels will be relatively high, but some forecast models suggest a small storm system could develop off the Mid-Atlantic coast and move offshore, limiting rainfall totals across Southern New England. Other guidance, including the European model and its ensemble average, suggests widespread precipitation totals of around one-quarter to one-half inch.

The highest likelihood for showers and thunderstorms is between 10 PM Sunday and 6 AM Monday EDT as activity moves from west to east before drier air arrives behind the cold front.

**Key Message 4: Return to more seasonable temperatures and lower humidity levels for the early to middle part of next week, then turning more active again into Thursday.**

A cooler and much drier air mass will move into Southern New England Monday and Tuesday.

High temperatures will generally range from the 70s to lower 80s, while dew points fall into the 40s and 50s, creating much more comfortable conditions. Combined with abundant sunshine, early next week looks like an excellent stretch of summer weather.

Temperatures begin warming again by Wednesday, reaching the lower to middle 80s, while humidity remains manageable.

A more active weather pattern may return around Thursday or Thursday night as a stronger upper-level disturbance and another cold front approach the region. This could bring a better opportunity for showers and thunderstorms, although it remains too early to determine specific impacts.

Countdown to Summer

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Summer Begins on: June 21 2026 at 4:24 AM EDT

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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)

Current National Weather Maps

Current Active NWS Map
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