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Sunny - Less Humid Today
Mostly Clear Tonight
Last Complete Site Update: 8/04 - 7:02 AM
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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)
83Degrees
High Temperature
0%
Probability of Precipitation - Daytime
59Degrees
Low Temperature
0%
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 4
Nashua - East
Sunny, with a high near 86. Calm wind becoming west around 5 mph in the morning.
Mostly clear, with a low around 59. Calm wind.
Peterborough - Central/West
Areas of fog before 8am. Otherwise, sunny, with a high near 81. Calm wind becoming west around 5 mph in the afternoon.
Mostly clear, with a low around 58. Calm wind becoming southwest around 5 mph.
Wednesday/Wednesday Night - August 5
Nashua - East
Partly sunny, with a high near 86. Calm wind becoming southwest around 5 mph in the afternoon.
Partly cloudy, with a low around 66. Southwest wind around 5 mph becoming calm in the evening.
Peterborough - Central/West
Partly sunny, with a high near 82. Calm wind becoming southwest around 5 mph in the afternoon.
Partly cloudy, with a low around 65. Southwest wind around 5 mph becoming calm.
Thursday/Thursday Night - August 6
Nashua - East
A 30 percent chance of showers after 3pm. Mostly sunny, with a high near 89. Calm wind becoming southwest around 5 mph in the afternoon.
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 70.
Peterborough - Central/West
A 40 percent chance of showers after 2pm. Mostly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon.
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 68.
Friday/Friday Night - August 7
Nashua - East
Peterborough - Central/West
Saturday/Saturday Night - August 8
Nashua - East
Peterborough - Central/West
Sunday/Sunday Night - August 9
Nashua - East
Peterborough - Central/West
Current Weather Readings in Peterborough, NH
Time of the readings below: 4 Aug 2026 4:04 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:
83.4°F (0.4)
High Temperature:
83.9 at 3:54 PM
Low Temperature:
59.5 at 5:30 AM
Precipitation Today:
0.00 inches
Current Dewpoint:
61.6°F (-1.3)
Highest Heat Index Reading:
85.9 at 3:31 PM
Current Windspeed:
1 MPH (-0)
Barometric Trend:
Steady
Hours of Daylight Today:
14:21
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: 8/04 - 7:02 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:
The Wednesday Evening update - 8/5 will be later than usual. Otherwise normal scheduling prevails.
A beautiful mid summer day ahead for New England. Low humidity, light winds, abundant sunshine. What more could you ask for?
Warmer, and more humid weather begins to return on Wednesday and late in the week. At the moment, looks like it may last through the upcoming weekend.
A stretch of classic August weather is settling into Maine and New Hampshire for the rest of the week. Sunshine will dominate through midweek, followed by a warming trend with increasing humidity as the week progresses. The hottest conditions are expected on Friday, when it will feel like the middle 90s in some inland areas south of the mountains. While most days will remain dry, a few afternoon or evening showers and thunderstorms are possible later in the week, with an isolated strong storm not completely out of the question.
Do you have plans on Wednesday, around 2:35 a.m. EDT? No? You do now (if you have a telescope). A large chunk of a SpaceX rocket is hurtling at seven times the speed of sound and is on a collision course with the moon. The piece that will hit the moon is the upper stage of the Falcon 9 rocket that launched from Cape Canaveral on Jan. 15, 2025. It's been in a lopsided orbit around the Earth ever since, but now it's getting launched into the moon. Space tracking expert Bill Gray predicts that impact will be visible, but not with the naked eye. You may be able to see the plume rise above the lunar surface with a telescope. The best places to see it will be the eastern U.S., Canada and much of South America.
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:
A stretch of classic August weather is settling into Maine and New Hampshire for the rest of the week. Sunshine will dominate through midweek, followed by a warming trend with increasing humidity as the week progresses. The hottest conditions are expected on Friday, when it will feel like the middle 90s in some inland areas south of the mountains. While most days will remain dry, a few afternoon or evening showers and thunderstorms are possible later in the week, with an isolated strong storm not completely out of the question.
Key Messages:
- High pressure will bring mainly dry weather through the remainder of the week with warming temperatures and a return to higher humidity by late week.
What has changed since the last Forecast Update?
No significant changes were made to the forecast early this Tuesday morning.
What this means for you:
Expect comfortable summer weather today with sunshine, lower humidity, and a refreshing breeze. Each day afterward will become warmer and more humid, making outdoor activities feel increasingly uncomfortable by the end of the week. If you have plans later this week or this weekend, keep an eye on the forecast for the possibility of scattered afternoon and evening thunderstorms.
Click the Open/Close Button to Display the Full Edited Area Forecast Discussion
**Area Forecast Discussion, National Weather Service Gray ME**
**621 AM EDT Tuesday, August 4, 2026**
**What Has Changed**
No significant changes were made to the forecast early this Tuesday morning.
**Key Messages**
1. High pressure will bring mainly dry weather through the remainder of the week with warming temperatures and a return to higher humidity by late week.
**Discussion**
**Key Message 1 Description**
High pressure at the surface will build to the southwest today, bringing mostly sunny skies across the region. Afternoon temperatures will reach the upper 70s to lower 80s across northern areas, with middle to upper 80s south of the mountains. During the daytime, the atmosphere will mix vertically, a process known as daytime mixing, allowing drier air from above to reach the surface. This will keep humidity comfortable, with dew points mainly in the 50s. West winds will also become breezy, with gusts up to around 25 mph, especially during the first half of the day.
Skies will be clear to partly cloudy tonight. Light winds and clear conditions will allow temperatures to cool efficiently, dropping to around 50 degrees in some interior valleys, with upper 50s to lower 60s elsewhere.
The warming trend will continue Wednesday through the rest of the week. A Bermuda High, a large area of high pressure over the Atlantic Ocean, will direct warm, tropical air northward on south to southwest winds. This pattern will bring typical August weather, with afternoon temperatures in the 80s to near 90 degrees and increasingly humid conditions as dew points rise into the 60s and occasionally near 70 degrees.
The hottest and most humid conditions currently appear likely on Friday, when it may feel like the middle 90s during the afternoon across some inland locations south of the mountains.
As is common during the summer, scattered showers and thunderstorms that develop from daytime heating, known as diurnally driven showers and thunderstorms, will be possible on most days. At this time, no single day appears especially favorable for widespread severe weather. However, a few weak disturbances in the atmosphere, sometimes called waves of energy, could trigger a few strong to severe thunderstorms later in the week or during the upcoming weekend.
Weather Summaries and Full Area Forecast Discussions - South (Edited)
Summary - Southern New England - Massachusetts/Northern CT/Rhode Island
Summary:
A pleasant and seasonable day is expected today with lower humidity, sunshine, and afternoon temperatures in the low to mid 80s. Beginning Wednesday, summer heat and much higher humidity return and are expected to continue into the weekend. A few afternoon and evening thunderstorms are possible each day from Thursday through the weekend, with some capable of producing torrential rainfall.
Key Messages:
- Dry and seasonable today, but summer heat and humidity return Wednesday through the weekend. Scattered afternoon and evening thunderstorms are possible each day.
What has changed since the last Forecast Update?
No significant changes.
What this means for you
Today will be the most comfortable day of the week for outdoor activities. Heat and humidity will steadily increase beginning Wednesday, making it feel much hotter than the actual air temperature. If you have outdoor plans later this week, be prepared for hot, muggy conditions and keep an eye on the sky during the afternoon and evening, when scattered thunderstorms may develop. Some storms could produce very heavy rainfall in a short period of time.
Click the Open/Close Button to Display the Full Edited Area Forecast Discussion
**Area Forecast Discussion, National Weather Service Boston/Norton MA**
**439 AM EDT Tuesday, August 4, 2026**
**What Has Changed**
The forecast remains on track.
**Key Messages**
Dry and seasonable today, but summer heat and humidity return Wednesday through the weekend. Scattered afternoon and evening thunderstorms are possible each day.
**Discussion**
**Key Message 1, Dry and seasonable today, but summer heat and humidity returns Wednesday through the weekend. Scattered afternoon and evening thunderstorms possible each day.**
Weak high pressure builds into the region today behind a cold front, bringing clearing skies, dry weather, and afternoon temperatures in the low to mid 80s.
Humidity begins increasing on Wednesday as dew points climb into the middle 70s, reaching their highest levels Thursday and Friday before remaining elevated into the weekend. A Bermuda high pressure system over the western Atlantic will maintain a steady southerly wind, transporting warm, moisture rich air into southern New England. This will create periods of very uncomfortable humidity.
Temperatures about 2,500 feet above the ground, known as 925 millibar temperatures, are forecast to reach around 72 degrees each afternoon. That supports afternoon highs of 85 to 90 degrees across much of southern New England. Combined with dew points between 72 and 76 degrees, it will feel significantly hotter, and heat advisories are being considered for the latter half of the week and possibly into the weekend.
A few weak disturbances in the upper levels of the atmosphere will move across New England later this week. When combined with the hot, humid air and enough atmospheric instability, they should be sufficient to trigger scattered afternoon and evening showers and thunderstorms each day from Thursday through the weekend.
Atmospheric moisture, measured as precipitable water, is forecast to range from 1.75 to 2.10 inches. This indicates an unusually moist atmosphere that can support thunderstorms capable of producing torrential rainfall and localized flooding from very heavy precipitation.
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: 79 Degrees - Low Temperature: 56 Degrees
(Tip: Place your cursor over the bar below to see the number)
Weather News/Headlines of Interest
Drivers navigate flash flooding in Fitchburg as region is hit with nearly 6 inches of rain
Northeast to get brief break from August heat, humidity before storms return
Flash flooding possible as unstable atmosphere fuels severe thunderstorms in the Southeast
Damaging winds, flash flooding to roll through the Plains early week
Weather-fueled Spokane wildfires destroy 700 structures, force 60,000 to evacuate
Heat health alerts in England as temperatures set to reach 34C
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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