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Last Complete Site Update: 6/13 - 6:46 AM

Weather for New England and the Northeast

Updated Twice per day

Delivering Weather Forecasts for New England for 27+ years

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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)
88Degrees
High Temperature
0%
Probability of Precipitation - Daytime
61Degrees
Low Temperature
0%
Probability of Precipitation - Nighttime
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Your Daily Forecast - Three Days at a Time

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Monday/Monday Night - June 15

Nashua - East

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A 30 percent chance of showers before 8am. Mostly sunny, with a high near 81. Northwest wind around 10 mph.

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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. Northwest wind around 10 mph.

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Mostly clear, with a low around 51.

Tuesday/Tuesday Night - June 16

Nashua - East

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Sunny, with a high near 82.

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Peterborough - Central/West

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Sunny, with a high near 76.

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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 19

Nashua - East

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Peterborough - Central/West

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Saturday/Saturday Night - June 13

Nashua - East

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Sunny and hot, with a high near 90. Northwest wind 5 to 10 mph.

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Mostly clear, with a low around 62. West wind around 5 mph becoming calm.

Peterborough - Central/West

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Sunny, with a high near 86. Calm wind becoming northwest around 5 mph in the morning.

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Mostly clear, with a low around 60. West wind around 5 mph becoming calm.

Sunday/Sunday Night - June 14

Nashua - East

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Increasing clouds and hot, with a high near 94. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

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Showers, mainly after 10pm. Low around 60. 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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Mostly sunny, with a high near 88. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

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Showers. Low around 57. South wind 5 to 10 mph. Chance of precipitation is 90%.

Current Weather Readings in Peterborough, NH

Time of the readings below: 13 Jun 2026 1:03 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: 

80.4°F (2.2)

High Temperature:

80.4 at 1:03 PM

Low Temperature:

65.4 at 6:39 AM

Precipitation Today:

0.00 inches

Current Dewpoint:

57.1°F (0.2)

Highest Heat Index Reading:

80.8 at 12:44 PM

Current Windspeed:

1 MPH (-0)

Barometric Trend:

Steady

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: 6/13 - 6:45 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

It will be warm/hot today and Sunday. The difference today is the lack of humidity in the air. So it will feel much better than yesterday. However, I do think the humidity returns for Sunday, but that heat will be ending Sunday night as a cold front crosses the region with showers and thunderstorms, ending early Monday. The air is more pleasant behind the front into mid next week.

Warm weather continues through the weekend, but with noticeably lower humidity than recent days. High temperatures will reach the 80s to lower 90s today and Sunday. A cold front crossing the region Sunday could trigger a few strong to severe thunderstorms, especially during the afternoon and evening. More comfortable, seasonable weather arrives for much of next week with highs mainly in the 70s to lower 80s. Coastal communities should also be aware of elevated astronomical tides and minor coastal flooding concerns through 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.
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On this day in history:
On this day in 1777, American Revolutionary War hero Marie-Joseph Paul Roch Yves Gilbert du Motier, Marquis de Lafayette, arrived in South Carolina at the age of 19 with the intent to serve alongside George Washington.

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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:
Warm weather continues through the weekend, but with noticeably lower humidity than recent days. High temperatures will reach the 80s to lower 90s today and Sunday. A cold front crossing the region Sunday could trigger a few strong to severe thunderstorms, especially during the afternoon and evening. More comfortable, seasonable weather arrives for much of next week with highs mainly in the 70s to lower 80s. Coastal communities should also be aware of elevated astronomical tides and minor coastal flooding concerns through early next week.

Key Messages:
 - Humidity decreases this weekend while temperatures remain warm, with highs in the 80s to lower 90s today and Sunday. Dense fog is possible across far southern Maine early this morning.
 - A cold front will cross the region Sunday and may bring some strong thunderstorms.
 - Seasonable weather returns for much of the work week.
 - High astronomical tides continue into early next week.

What has changed since the last Forecast Update?
The Dense Fog Advisory has been updated for early this morning. Otherwise, there are few changes to the forecast over the next several days as forecast model agreement remains good.

What this means for you:
Today will feel much more comfortable despite the heat because humidity levels will be lower. Areas of dense fog early this morning along the southern Maine coast will improve after sunrise. Sunday remains hot and could bring a few strong thunderstorms capable of damaging wind gusts, with a very low but non-zero tornado risk. Next week looks generally pleasant with cooler nights and more typical June temperatures. Residents along the coast should monitor high tide cycles as water levels may approach minor flood thresholds.

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

**Area Forecast Discussion**
**National Weather Service Gray ME**
**501 AM EDT Saturday, June 13, 2026**

**What Has Changed**


The Dense Fog Advisory has been updated for early this morning. Otherwise, there are few changes to the forecast over the next several days as forecast model agreement remains good.

**Key Messages**

1. Humidity decreases this weekend while temperatures remain warm, with highs in the 80s to lower 90s today and Sunday. Dense fog is possible across far southern Maine early this morning.

2. A cold front will cross the region Sunday and may bring some strong thunderstorms.

3. Seasonable weather returns for much of the work week.

4. High astronomical tides continue into early next week.

**Synopsis**

A cold front moves through the area this morning, bringing drier air and lower humidity. Another cold front arrives Sunday with the potential for thunderstorms. More typical June weather follows for much of next week before another system approaches late in the week.

**Discussion**

**Key Message 1 Description**


Locally dense fog across the coastal plain will likely persist through sunrise. Conditions are expected to improve as a front moves through this morning and west winds develop.

Aside from the fog, today will be significantly drier with no precipitation expected. Temperatures will still climb well into the 80s, with some locations approaching 90 degrees. Because humidity levels will be much lower than yesterday, it should feel more comfortable. In fact, heat index values are expected to remain lower than the actual air temperatures.

**Key Message 2 Description**

Sunday continues to look like the last truly hot day before a return to more seasonable weather. Forecast guidance has performed well with temperatures recently, supporting highs in the upper 80s to lower 90s in many areas. Mixing of the atmosphere is expected to bring some drier air down from higher levels, preventing humidity from becoming excessively uncomfortable. Some locations may approach Heat Advisory criteria, and trends will continue to be monitored.

Forecast models continue to suggest the development of a prefrontal trough, an area of lower pressure ahead of the main cold front. The strongest thunderstorm activity associated with the cold front may not arrive until late evening, which is less favorable for severe weather. However, high-resolution forecast models continue to indicate isolated thunderstorms developing across northern areas and western New Hampshire during the afternoon and early evening.

These storms will need to be watched closely. Atmospheric conditions are expected to provide enough instability and wind shear, changes in wind speed and direction with height, to support organized thunderstorms and a few severe storms.

Colorado State University machine learning guidance continues to indicate some severe weather potential across the region, primarily related to damaging winds. This includes both straight-line wind damage and a low risk of tornadoes. While tornadoes are not considered the most likely threat, forecast soundings indicate enough low-level wind rotation to support favorable storm structures for isolated tornado development. As a result, the threat cannot be completely ruled out.

More likely, dry air in the middle levels of the atmosphere will enhance evaporative cooling within thunderstorms, helping produce strong downdrafts and potentially damaging wind gusts. The region remains within Marginal and Slight Risk areas in the latest Storm Prediction Center Day 3 outlook. Thunderstorms remain in the forecast, but stronger wording will wait until confidence increases regarding daytime storm development.

**Key Message 3 Description**

There has been little change in forecast guidance regarding a return to seasonable weather next week. Once the cold front clears the coast, possibly not until Monday morning, daytime temperatures should generally range from 75 to 85 degrees.

Nighttime temperatures will be comfortable, mainly in the 50s to lower 60s. Some northern valleys may even drop into the 40s on a few nights.

Humidity and temperatures will gradually increase again later in the week ahead of another approaching trough, an elongated area of lower atmospheric pressure. This may allow temperatures to climb back into the upper 80s to near 90 degrees across parts of southern New Hampshire and coastal western Maine.

As the week progresses, afternoon and evening showers and thunderstorms driven by daytime heating will become more common, although widespread organized severe weather is not expected. A larger weather system is forecast to move through the Northeast Friday or Saturday, bringing a better chance for numerous showers and thunderstorms along a cold front and the next opportunity for widespread rainfall.

**Key Message 4 Description**

High astronomical tides, combined with storm surge of up to one-half foot, may bring total water levels close to minor coastal flood thresholds around times of high tide through early next week. Coastal residents should monitor forecasts for any flood-related updates.

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

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

Summary:
Warm and mainly dry weather continues across Southern New England through the weekend, with temperatures reaching the upper 80s to lower 90s but with noticeably lower humidity than recent days. The next chance for showers and thunderstorms arrives Sunday night as a cold front moves through, although the risk for severe weather remains low at this time. More comfortable conditions return Monday through midweek with lower humidity and seasonable temperatures. Another opportunity for showers and thunderstorms may develop late next week.

Key Messages:
 - Mostly dry with above normal temperatures continuing through the weekend with humidity on the decrease.
 - Expecting showers and thunderstorms Sunday night with the risk for severe weather remaining low.
 - Seasonable temperatures and lower humidity returns through the first half of next week before a return to a more active pattern late week.

What has changed since the last Forecast Update?
No significant changes to the forecast.

What this means for you
If you have outdoor plans this weekend, most of the time will be dry and quite warm, but the lower humidity will make conditions feel more comfortable than they have recently. Keep an eye on the forecast for Sunday night, when showers and thunderstorms could move through the region. Early next week will bring a welcome stretch of less humid air and more seasonable weather before a potentially more active weather pattern develops later in the week.

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

*Area Forecast Discussion, National Weather Service Boston/Norton MA**
**407 AM EDT Saturday, June 13, 2026**

**What Has Changed**


No significant changes to the forecast.

**Key Messages**

* Mostly dry with above normal temperatures continuing through the weekend with humidity on the decrease.

* Expecting showers and thunderstorms Sunday night with the risk for severe weather remaining low.

* Seasonable temperatures and lower humidity returns through the first half of next week before a return to a more active pattern late week.

**Discussion**

**Key Message 1, Mostly dry with above normal temperatures continuing through the weekend with humidity on the decrease**


Temperatures will remain in the upper 80s to lower 90s through the weekend as an unusually warm air mass stays in place across New England. The biggest change compared to the past few days will be the lower humidity. Dewpoint temperatures, a measure of how much moisture is in the air, are expected to fall into the middle and upper 50s behind a cold front moving offshore this morning.

In the upper atmosphere, a ridge of high pressure is building into the region. This pattern generally supports dry and stable weather, so conditions are expected to remain dry through most of Sunday.

**Key Message 2, Expecting showers and thunderstorms Sunday night with the risk for severe weather remaining low**

A cold front approaching Southern New England Sunday night will bring an increasing chance for showers and thunderstorms.

Forecasters expect atmospheric instability, the fuel thunderstorms need to strengthen, to remain relatively limited during the overnight hours. While wind shear, which is the change in wind speed and direction with height, is expected to be fairly strong, the lack of instability should help keep the risk of severe thunderstorms low.

There is still uncertainty regarding rainfall amounts. Forecast guidance suggests a corridor of very moist air could develop somewhere between the Mid Atlantic region and coastal Maine. Atmospheric moisture levels, measured by precipitable water values, may exceed 2 inches in some locations.

The European model remains the most aggressive solution, bringing this deep moisture northward along much of the Interstate 95 corridor. Meanwhile, the American GFS model and the Canadian model keep the deepest moisture farther south near Long Island. Ensemble guidance, which combines many model simulations, continues to suggest the highest moisture levels may remain south of Southern New England. However, recent forecasts have shown a gradual trend northward, making this something worth monitoring through the day.

**Key Message 3, Seasonable temperatures and lower humidity returns through the first half of next week before a return to a more active pattern late week**

A cooler and much drier air mass is expected to move into Southern New England Monday and Tuesday.

Meteorologists are forecasting temperatures several thousand feet above the ground, known as 850 millibar temperatures, to drop to around 46 to 50 degrees Fahrenheit. That is roughly 9 to 13 degrees cooler than recent values and supports afternoon highs mainly in the lower 80s.

Humidity levels will also drop significantly, with dewpoints falling into the mid 40s to mid 50s. This will make conditions feel much more comfortable compared to the recent stretch of warm and humid weather.

Temperatures should gradually climb again by Wednesday, reaching the lower to middle 80s. Humidity levels are expected to remain fairly manageable.

Looking ahead, a more active weather pattern may develop around Thursday or Thursday night as a stronger upper level disturbance moves into the region and pushes another cold front through Southern New England. This system could bring a better chance for showers and thunderstorms, although it remains too early to determine specific details.

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)

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