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Last Complete Site Update: 9/02 - 4:54 PM
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"By all these lovely tokens, September days are here.
With summer's best of weather and autumn's best of cheer."
- Helen Hunt Jackson
Today’s Weather at a Glance
Updated Every Morning and as Needed Through the Day
(Averages Across Southern NH)
73Degrees
High Temperature
0%
Probability of Precipitation - Daytime
56Degrees
Low Temperature
90%
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
No Active Advisories
None
Monday/Monday Night - September 7
Nashua - East
Peterborough - Central/West
Tuesday/Tuesday Night - September 8
Nashua - East
Peterborough - Central/West
Wednesday/Wednesday Night - September 2
Nashua - East
A chance of rain, then rain and possibly a thunderstorm after 2am. Patchy fog after 5am. Low around 59. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Peterborough - Central/West
Rain likely, then rain and possibly a thunderstorm after 2am. Patchy fog after 3am. Low around 57. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday/Thursday Night - September 3
Nashua - East
Rain and thunderstorms before 1pm, then a chance of showers and thunderstorms, mainly between 1pm and 4pm. Patchy fog between 7am and 9am. High near 80. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Mostly clear, with a low around 61. Calm wind.
Peterborough - Central/West
Rain and thunderstorms before 2pm, then a chance of showers and thunderstorms, mainly between 2pm and 4pm. Patchy fog before 10am. High near 77. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Mostly clear, with a low around 59. Calm wind.
Friday/Friday Night - September 4
Nashua - East
Sunny, with a high near 82. Calm wind becoming northwest around 5 mph in the morning.
Mostly clear, with a low around 59. Northwest wind around 5 mph.
Peterborough - Central/West
Increasing clouds, with a high near 77. Calm wind becoming northwest around 5 mph in the morning.
Mostly clear, with a low around 55. Calm wind becoming northwest around 5 mph.
Saturday/Saturday Night - September 5
Nashua - East
Peterborough - Central/West
Sunday/Sunday Night - September 6
Nashua - East
Peterborough - Central/West
Current Weather Readings in Peterborough, NH
Time of the readings below: 2 Sep 2026 11:08 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:
62.5°F (-0.3)
High Temperature:
69.1 at 3:59 PM
Low Temperature:
60.2 at 6:49 AM
Precipitation Today:
0.00 inches
Current Dewpoint:
59.2°F (0.3)
Highest Heat Index Reading:
69.1 at 3:59 PM
Current Windspeed:
0 MPH (0)
Barometric Trend:
Steady
Hours of Daylight Today:
13:05
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: 9/02 - 4:55 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:
On the regular schedule.
Welcome to September. The beginning of Meteorological Fall.
A widespread period of rain, heavy showers, and a few thunderstorms will move across New Hampshire and Maine tonight into Thursday. Rainfall totals are expected to range from 0.75 to 1.25 inches. Drier weather develops Thursday night, followed by generally cooler and mostly dry conditions Friday and through the Labor Day weekend, although scattered showers are possible Saturday afternoon.
Tropical Storm Edouard made landfall in Texas last night.
A mostly dry start to September 2 will give way to a wetter period tonight and Thursday as low pressure moves across the region. Rain will become more widespread overnight, with periods of moderate to locally heavy rain possible late tonight into Thursday morning. The Thursday morning commute could be affected by reduced visibility and water ponding on roadways. A few thunderstorms are possible across southern New Hampshire Thursday afternoon, including the potential for some strong storms. Drier weather should gradually return Friday through Labor Day weekend, although scattered afternoon showers are possible Saturday.
The Drought Maps were updated.
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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 1901, Vice President Theodore Roosevelt spoke at the Minnesota State Fair, where he quoted an old proverb he lived by: "Speak softly and carry a big stick."
Latest site updates and additions:
08/17 - See the First look at Autumn Maps and info here
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
05/01 - 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: 08/30 - Next Update: 09/15 (or thereabouts)
Weather Summaries and Full Area Forecast Discussions - North (Edited)
Summary - Northern New England - New Hampshire and Maine
Summary:
A widespread period of rain, heavy showers, and a few thunderstorms will move across New Hampshire and Maine tonight into Thursday. Rainfall totals are expected to range from 0.75 to 1.25 inches. Drier weather develops Thursday night, followed by generally cooler and mostly dry conditions Friday and through the Labor Day weekend, although scattered showers are possible Saturday afternoon.
Key Messages:
- A widespread period of rainfall moves through tonight and Thursday.
- A gradual drying trend follows for Friday and the Labor Day weekend, although there will be chances for scattered showers Saturday afternoon.
What has changed since the last Forecast Update?
No significant changes at this time.
What this means for you:
Plan for a wet Thursday, with periods of rain continuing into the morning before gradually tapering from west to east. A few thunderstorms are possible this evening, especially across western New Hampshire, but severe weather is not expected. Thursday afternoon may bring some breaks of sunshine in New Hampshire along with a few pop up showers. Friday should be mostly dry, while Saturday brings a better chance of scattered showers, particularly during the afternoon. The holiday weekend will be noticeably cooler, with breezier north winds. Labor Day may bring a modest warmup, although rain chances could increase Monday night into Tuesday.
Click the Open/Close Button to Display the Full Edited Area Forecast Discussion
Area Forecast Discussion, National Weather Service Gray ME, 221 PM EDT
Wed Sep 2 2026
**WHAT HAS CHANGED**
No significant changes at this time.
**KEY MESSAGES**
1. A widespread period of rainfall moves through tonight and Thursday.
2. A gradual drying trend follows for Friday and the Labor Day weekend, although there will be chances for scattered showers Saturday afternoon.
**DISCUSSION**
**Tonight and Thursday**
A warm front remains stalled to the southwest, while high pressure sits northeast of Maine. The high pressure area will gradually move east tonight as the warm front lifts north. A wave of low pressure will travel along this front, bringing widespread rain, heavy showers, and some thunderstorms.
The leading edge of the showers will reach northern New Hampshire around sunset, then spread south and east through the evening. A few thunderstorms will also be possible, especially across western New Hampshire.
Severe storms are expected across Upstate New York today. However, by the time those storms reach New Hampshire, the thunderstorms are expected to become elevated, meaning the strongest activity should be higher in the atmosphere rather than directly near the ground. A severe weather threat is therefore not expected locally.
The showers and thunderstorms will develop into a steadier period of rain overnight, with heavier downpours embedded within the rainfall. Rain will continue overnight, with the back edge moving from west to east Thursday morning.
Some breaks of sunshine are likely across New Hampshire Thursday afternoon. This could allow scattered pop up showers to develop during the afternoon.
Overall rainfall amounts are expected to range from 0.75 to 1.25 inches.
The warm front is expected to stall somewhere across western or central Maine. East of the front, low clouds and occasional sprinkles will likely continue through Thursday afternoon.
It will not be until an occluded front passes through Thursday night that drier air returns to the region. An occluded front forms when one front catches up with another, helping push the moist air out of the area.
Clearing is expected Thursday night behind the front, although nighttime valley fog will likely develop late in the night.
**Friday through the Labor Day weekend**
An upper low, an area of lower pressure and colder air higher in the atmosphere, will slowly move from central Quebec through northern Maine and toward Nova Scotia from Friday into Saturday.
Friday should be mainly dry, although a few showers will be possible during the afternoon over and north of the mountains.
A better chance for more widespread showers may develop Saturday afternoon as a vort lobe rotates around the upper low. A vort lobe is a smaller area of spinning energy within the larger upper-level weather system that can help trigger showers and thunderstorms.
Weather models suggest that at least some modest instability will develop Saturday. Instability means the atmosphere will have enough warm, buoyant air to allow showers or thunderstorms to grow. A few rumbles of thunder will therefore be possible, especially across southern New Hampshire where instability is expected to be greatest.
Persistent northwest winds will bring cooler temperatures and lower humidity through the holiday weekend. High temperatures should generally range from the mid 60s north to the mid 70s south, with some breezier winds out of the north.
An approaching ridge, an area of higher pressure that generally promotes more stable weather, may bring a slight warmup on Labor Day. Some low precipitation chances could return Monday night into Tuesday.
Weather Summaries and Full Area Forecast Discussions - South (Edited)
Summary - Southern New England - Massachusetts/Northern CT/Rhode Island
Summary:
A wet start to Thursday is expected across southern New England, with widespread showers, downpours, and a few thunderstorms from the early morning into Thursday afternoon. Conditions should improve Thursday night, leading to a mainly dry and pleasant stretch from Friday through early next week. Friday will be the warmest day, with many areas reaching the lower to middle 80s, followed by cooler temperatures in the 70s for the weekend. Beachgoers should pay particular attention to the increasing risk of dangerous rip currents, especially Sunday into Monday.
Key Messages:
- Widespread showers and thunderstorms early Thursday morning, with another chance for showers and thunderstorms Thursday afternoon.
- Mainly dry and very pleasant weather from Friday into early next week, except for some scattered afternoon showers mainly Saturday. Pleasant temperatures are expected, with highs in the 70s, but lower to middle 80s on Friday.
- Elevated risk for dangerous rip currents during the holiday weekend, especially Sunday into Monday.
What has changed since the last Forecast Update?
Increasing concern for dangerous rip currents during the holiday weekend, particularly Sunday into Monday.
What this means for you
Plan for a wet Thursday morning, with the potential for heavy downpours and a few thunderstorms. Most of the holiday weekend should be pleasant, but Saturday could bring a few scattered showers. Friday looks warm and sunny, while Saturday and Sunday will be cooler, especially along the eastern Massachusetts coast, Cape Cod, and the Islands. If you are heading to the beach, the rip current risk will become increasingly important, particularly Sunday and Monday on east-facing ocean beaches.
Click the Open/Close Button to Display the Full Edited Area Forecast Discussion
**Area Forecast Discussion, National Weather Service Boston/Norton MA 213 PM EDT Wed Sep 2 2026**
**What Has Changed**
Increasing concern for dangerous rip currents during the holiday weekend, particularly Sunday into Monday.
**Key Messages**
* Widespread showers and thunderstorms early Thursday morning, with another chance for showers and thunderstorms Thursday afternoon.
* Mainly dry and very pleasant weather from Friday into early next week, except for some scattered afternoon showers mainly Saturday. Pleasant temperatures are expected, with highs in the 70s, but lower to middle 80s on Friday.
* Elevated risk for dangerous rip currents during the holiday weekend, especially Sunday into Monday.
**Discussion**
**Key Message 1, Widespread showers and thunderstorms early Thursday morning and possibly Thursday afternoon**
A frontal wave, an area of developing low pressure along a front, will move across southern New England late tonight into Thursday morning. A surface warm front will lift northeast, bringing a rich plume of moisture with precipitable water values between 1.5 and 2 inches. Precipitable water is a measure of how much moisture is available in the atmosphere, and these values indicate a very moist air mass capable of producing heavy rainfall.
Widespread showers will develop across southern New England during the early morning hours, with some embedded thunderstorms. Shower activity should begin around 2 AM across western areas and reach the east coast around 4 to 6 AM. Heavy downpours are likely because of the abundant moisture.
There is a marginal risk for flash flooding across western Massachusetts and Connecticut, particularly around the Springfield and Hartford areas. However, there is currently no strong indication of widespread or highly impactful flooding.
Some instability in the atmosphere could produce rumbles of thunder as the showers move across the region. However, wind shear, which describes how winds change with height, along with the atmospheric temperature structure, does not appear favorable for strong thunderstorms. Therefore, the potential for severe storms appears limited.
As the frontal wave moves offshore, some drier air in the middle levels of the atmosphere will move in from the west. This should allow some clearing during the late morning and early afternoon. Increasing sunshine will provide additional daytime heating and atmospheric instability, creating another opportunity for isolated to scattered showers and thunderstorms Thursday afternoon.
High-resolution model guidance has been inconsistent regarding afternoon thunderstorms Thursday, so a uniform 40 percent chance of precipitation is being used across southern New England after 2 PM.
Clearing is expected Thursday night into Friday, with warm and sunny conditions developing Friday afternoon.
**Key Message 2, Mainly dry and very pleasant Friday into early next week**
An upper-level shortwave, a smaller disturbance in the jet stream, will become cut off over the Canadian Maritimes during the holiday weekend. This will help establish an upper trough, an elongated area of lower pressure in the upper atmosphere, over the Northeast and should support generally pleasant weather.
Most of the period should remain dry. However, additional disturbances moving through the northern part of the jet stream will probably produce scattered afternoon showers mainly Saturday, although a few showers cannot be ruled out Friday.
High pressure building southward from eastern Canada Sunday into Monday should bring an end to the shower threat during the latter part of the holiday weekend.
Friday will be the warmest day, with highs mainly in the lower to middle 80s. Highs should generally be in the 70s to near 80 from the weekend into early next week.
Saturday and Sunday are expected to be the coolest days. Eastern Massachusetts, Cape Cod, and the Islands may only reach the upper 60s to lower 70s, especially with a stiff northeast afternoon breeze.
Overnight lows will mainly be in the 50s to lower 60s. Some of the normally coolest outlying locations could fall into the 40s by Sunday night into Monday morning as high pressure builds across the region.
**Key Message 3, Elevated risk for dangerous rip currents during the holiday weekend, especially Sunday into Monday**
Persistent northeast low-level winds and ocean swell are expected to produce an elevated risk for dangerous rip currents during the holiday weekend.
The greatest concern will be Sunday into Monday, particularly on east-facing beaches exposed to the ocean.
**What this means for you**
Thursday morning will be the main weather concern, with widespread rain, locally heavy downpours, and a few thunderstorms. Conditions improve later Thursday, followed by a warm and sunny Friday. The holiday weekend should generally be pleasant, although Saturday could feature scattered showers and Saturday and Sunday will be cooler, especially along the coast.
For beach plans, pay close attention to rip current conditions. The risk is expected to increase through the weekend and become particularly concerning Sunday into Monday on east-facing ocean beaches.
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: 72 Degrees - Low Temperature: 51 Degrees
(Tip: Place your cursor over the bar below to see the number)
Weather News/Headlines of Interest
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