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"August was nearly over - the month of apples and falling stars, the last care-free month for the school children. The days were not hot, but sunny and limpidly clear -
the first sign of advancing autumn."
- Viktor Nekrasov
Today’s Weather at a Glance
Updated Every Morning and as Needed Through the Day
(Averages Across Southern NH)
81Degrees
High Temperature
0%
Probability of Precipitation - Daytime
58Degrees
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
No Active Advisories
None
Monday/Monday Night - August 31
Nashua - East
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 83. Calm wind.
Showers likely, mainly between midnight and 4am. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 60. Calm wind. Chance of precipitation is 60%.
Peterborough - Central/West
Areas of fog before 8am. Otherwise, mostly sunny, with a high near 79. Calm wind.
Showers likely, mainly after 2am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 58. Calm wind. Chance of precipitation is 60%.
Tuesday/Tuesday Night - September 1
Nashua - East
Showers. Areas of fog before 9am. High near 74. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 80%.
Showers likely, mainly before 1am. Cloudy, with a low around 57. Chance of precipitation is 70%.
Peterborough - Central/West
Showers before 2pm, then showers and possibly a thunderstorm between 2pm and 5pm, then showers after 5pm. Areas of fog before 9am. High near 70. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 90%.
Showers likely, mainly before 1am. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
Wednesday/Wednesday Night - Septemeber 2
Nashua - East
A chance of showers between 9am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 74. Chance of precipitation is 50%.
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Peterborough - Central/West
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.
Thursday/Thursday Night - September 3
Nashua - East
Peterborough - Central/West
Friday/Friday Night - September 4
Nashua - East
Peterborough - Central/West
Saturday/Saturday Night - September 5
Nashua - East
Peterborough - Central/West
Sunday/Sunday Night - August 30
Nashua - East
Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 59. West wind around 5 mph becoming calm.
Peterborough - Central/West
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 56. West wind around 5 mph becoming calm.
Current Weather Readings in Peterborough, NH
Time of the readings below: 30 Aug 2026 11:55 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:
67.0°F (-1.5)
High Temperature:
78.7 at 2:14 PM
Low Temperature:
56.2 at 1:03 AM
Precipitation Today:
0.00 inches
Current Dewpoint:
61.0°F (-0.4)
Highest Heat Index Reading:
78.7 at 2:14 PM
Current Windspeed:
0 MPH (0)
Barometric Trend:
Rising Slowly
Hours of Daylight Today:
13:13
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: 8/30 - 4:17 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.
We are completely overcast at this hour here in South Central New Hampshire. A spot shower chance here in southern New Hampshire this afternoon. If you recall, back in my Thursday evening weekend outlook email, I mentioned this back door front dropping south today.
More showers are falling in central and nothern NH. Skies will clear tonight with a sunny Monday on tap. The rest of the week looks unsettled.
A cold front will bring showers and thunderstorms to parts of northern New England through this evening, with a return to fair weather Monday as high pressure moves in. After Monday, a cooler and more unsettled pattern is expected to develop through the middle and latter part of the week. Several rounds of showers and thunderstorms are possible from Tuesday into Saturday, although there is still considerable uncertainty about how the pattern evolves into Labor Day weekend.
The Drought Maps were updated today.
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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 1963, John F. Kennedy became the first U.S. president to have a direct text/teletype line, famously called the "hotline," connecting him to the Kremlin in Moscow.
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 cold front will bring showers and thunderstorms to parts of northern New England through this evening, with a return to fair weather Monday as high pressure moves in. After Monday, a cooler and more unsettled pattern is expected to develop through the middle and latter part of the week. Several rounds of showers and thunderstorms are possible from Tuesday into Saturday, although there is still considerable uncertainty about how the pattern evolves into Labor Day weekend.
Key Messages:
- A cold front will bring the chance for showers and thunderstorms through this evening, followed by fair weather Monday as high pressure builds in.
- A cooler and unsettled pattern sets in for the middle and later portion of the week.
What has changed since the last Forecast Update?
No significant changes with this forecast update.
What this means for you:
Expect a fairly pleasant Monday after showers and thunderstorms move through this evening. Monday should be dry with temperatures mainly in the 70s north and lower 80s south. From Tuesday onward, plan for a more unsettled stretch, with several opportunities for showers and thunderstorms and generally cooler temperatures. The Labor Day weekend forecast remains uncertain, and a wet weekend is far from a certainty at this point.
Click the Open/Close Button to Display the Full Edited Area Forecast Discussion
**Area Forecast Discussion, National Weather Service Gray ME, 235 PM EDT
Sun Aug 30 2026**
**What Has Changed**
No significant changes with this forecast update.
**Key Messages**
1. A cold front will bring the chance for showers and thunderstorms through this evening, followed by fair weather Monday as high pressure builds in.
2. A cooler and unsettled pattern sets in for the middle and later portion of the week.
**Discussion**
**Key Message 1 Description**
Latest surface analysis places a cold front across southern Quebec with a pre-frontal trough extending across the forecast area. A trough is an elongated area of lower pressure that can help produce clouds, showers and thunderstorms. This feature has resulted in mostly cloudy skies across much of the area, along with areas of showers moving across central New Hampshire into southwestern Maine.
The clouds and showers have limited destabilization, meaning the atmosphere has not been able to become as favorable for stronger thunderstorms as it otherwise might have. Areas near the Canadian border have seen some filtered sunshine, allowing MU CAPE, or most unstable convective available potential energy, to build to around 500 J/kg. CAPE is a measure of the amount of energy available to thunderstorms.
Latest radar shows thunderstorms along and ahead of the cold front, with these storms expected to move into areas north of the mountains through early this evening. The storms should track toward the Kennebec Valley through sunset. Limited CAPE will likely keep the storms below severe levels, although some storms could produce gusty winds up to 40 mph.
The cold front will move southward tonight, with showers weakening as they reach the coast. Much of tonight should be dry, although patchy fog is possible, especially in valley locations and areas that receive some rainfall. Overnight lows will range from the 40s north to the 50s south.
High pressure will be in control Monday, bringing fair weather. Temperatures will range from the 70s north to the lower 80s south. Light and variable winds will turn onshore along the coast.
**Key Message 2 Description**
A ridge will build into the Great Lakes through the week, while New England remains on the eastern edge of the ridge. A ridge is an area of higher pressure that generally favors more stable and quieter weather. The ridge is expected to strengthen across Hudson Bay by late in the week before shifting across northern Quebec.
While New England remains near the edge of the ridge during the middle of the week, the region is expected to become increasingly influenced by a deepening trough across Atlantic Canada by late in the week. A trough is an elongated area of lower pressure that typically supports clouds, precipitation and unsettled weather. This pattern will bring cooler and more unsettled conditions that could continue into Labor Day weekend.
The first system is expected to arrive in New England late Monday night and Tuesday. Low pressure will track through southern Canada, while a warm front is likely to stall across New England and focus additional rounds of showers and thunderstorms. The first round should miss most of the area to the south and west, making southwestern New Hampshire the most likely location to see showers and thunderstorms during this initial round.
The front will drift northward into central New England by late Wednesday and Thursday. At the same time, another wave of moisture will move northward into the region while the low pressure center makes its closest pass through southern Quebec. This setup brings the best chance for more widespread showers and thunderstorms across much of the area.
By late Thursday and Friday, the trough is expected to deepen south of Nova Scotia. With blocking high pressure to the north, any moisture and showers would have difficulty moving directly eastward out of New England and would instead tend to track southeastward. This could keep shower chances going into at least Saturday.
The best chance for New England to dry out for Labor Day weekend would come if the trough deepens farther south of Nova Scotia, resulting in a more consolidated trough and low pressure system. There is some support for this possibility, mainly from the Euro AIFS, an advanced European weather forecast model. New England would still generally remain within a cooler troughing pattern, but the resulting northwesterly flow could bring brighter and drier conditions.
There remains considerable uncertainty in how this pattern develops from Friday onward. At this point, a wet Labor Day weekend is far from a certainty.
Weather Summaries and Full Area Forecast Discussions - South (Edited)
Summary - Southern New England - Massachusetts/Northern CT/Rhode Island
Summary:
A generally unsettled weather pattern will develop across southern New England this week. Scattered showers are possible tonight, followed by a cooler and drier Monday behind a backdoor cold front. Shower and thunderstorm chances increase from Monday night through Thursday, although the exact timing and location remain uncertain. Drier and more seasonable weather should return for Sunday and Labor Day, with onshore breezes.
Key Messages:
- Scattered showers are possible tonight, followed by dry weather during the day Monday. Monday will be cooler with fewer clouds following a backdoor cold front.
- Unsettled weather is expected Monday night through Thursday, with several opportunities for showers and thunderstorms. Confidence remains low on which days will have the better storm chances.
- A mix of clouds and sun is expected Friday into the early part of Labor Day Weekend, with a few spot showers but generally drier conditions. Sunday and the Monday holiday should be dry and seasonable, with onshore breezes.
What has changed since the last Forecast Update?
No significant changes.
What this means for you
Tonight could bring a few scattered showers, mainly across Connecticut, Rhode Island, southeastern Massachusetts, Cape Cod, and the Islands, but widespread or soaking rain is not expected. Monday should be noticeably less humid and cooler, especially near the coast. From Monday night through Thursday, expect several opportunities for showers and thunderstorms, with some periods remaining dry. The timing of the better storm chances is still uncertain. Friday and Saturday may feature a few afternoon showers, while Sunday and Labor Day currently look mainly dry and seasonable.
Click the Open/Close Button to Display the Full Edited Area Forecast Discussion
**Area Forecast Discussion, National Weather Service Boston/Norton MA, 3
07 PM EDT Sun Aug 30 2026**
**What has Changed**
No significant changes.
**Key Messages**
1. Scattered showers are possible tonight, followed by dry weather during the day Monday. Monday will be cooler with fewer clouds following a backdoor cold front.
2. Unsettled weather is expected Monday night through Thursday, with several opportunities for showers and thunderstorms. Confidence remains low on which days will have the better storm chances.
3. A mix of clouds and sun is expected Friday into the early part of Labor Day Weekend, with a few spot showers but generally drier conditions. Sunday and the Monday holiday should be dry and seasonable, with onshore breezes.
**Discussion**
**Key Message 1, Scattered Showers Tonight, Drier Monday**
Cloud cover continues to increase today as high pressure moves eastward and eventually offshore. Weak low pressure will track near the region tonight, increasing the chances for scattered showers, mainly across Connecticut, Rhode Island, southeastern Massachusetts, Cape Cod, and the Islands.
Any showers tonight are not expected to produce widespread or soaking rainfall. Most of the activity should clear the region by Monday morning. Overnight lows will generally range from the upper 50s to the low and middle 60s.
A backdoor cold front is expected to move across southern New England late tonight into Monday morning. A backdoor cold front is a front that moves in from the northeast rather than following the more typical west-to-east progression. It will bring clearing skies and drier air.
Winds several thousand feet above the ground will shift from north to northeast after midnight, with that change reaching the surface after daybreak. This onshore flow will help keep eastern portions of the region somewhat cooler. Highs near the coast will generally be in the low 70s, while much of the region will reach the upper 70s. Humidity will also be lower.
By Monday evening and Monday night, high pressure will move farther offshore, beginning the transition toward a more unsettled weather pattern.
**Key Message 2, Unsettled Monday Night Through Thursday**
The weather becomes more unsettled Monday night through Thursday as a stalled frontal boundary remains near southern New England or just to the southwest. This boundary will focus several opportunities for showers and thunderstorms.
The frontal boundary separates hot, humid, and potentially unstable air to our southwest from more seasonable and less humid air across northern and eastern New England. Strong northwest winds several thousand feet above the surface will also help move smaller disturbances through the region.
It will not rain continuously during this period. However, the weather pattern will be controlled by thunderstorms and smaller disturbances moving through the upper-level flow. These features can be difficult for forecast models to time accurately, so there is still low confidence regarding exactly when and where showers and thunderstorms will develop.
The two periods that currently appear most favorable for showers and thunderstorms are Monday night into the first part of Tuesday, and again from Wednesday afternoon into part of Thursday.
The forecast currently carries higher precipitation chances, ranging from high Chance to Likely, during portions of these periods. Overall, however, slight Chance to Chance precipitation probabilities remain in place through much of Monday night through Thursday.
The potential for strong to severe thunderstorms appears limited at this time. A somewhat better chance could develop from Wednesday into Thursday as a stronger and more organized upper-level disturbance moves through. This could allow some of the warmer and more unstable air to move farther into the region.
Temperatures should remain mainly in the 70s to low 80s from Tuesday through Thursday. Overnight lows will be relatively mild, generally in the middle 60s, compared with normal late-August and early-September lows in the upper 50s to around 60 degrees.
**Key Message 3, Friday Through Labor Day Weekend**
The stalled frontal boundary should finally move offshore Thursday. Even after the boundary departs, winds higher in the atmosphere will remain favorable for some unsettled weather, resulting in a mix of clouds and sun.
Spot showers are possible Friday and Saturday afternoon, but most of the time should remain dry.
Broad high pressure will then build southward from the north Sunday into Labor Day. This will produce an onshore flow, but conditions should remain sunny, dry, and seasonable.
**What this means for the rest of the week**
The biggest forecast uncertainty is Monday night through Thursday. Rather than expecting several days of continuous rain, the current pattern suggests periods of showers and thunderstorms mixed with dry breaks. The best opportunities for storms currently appear to be Monday night into Tuesday and Wednesday afternoon into Thursday, although this timing could change as the forecast becomes more certain. By Sunday and Labor Day, the pattern should turn quieter, with dry and comfortable weather favored.
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: 74 Degrees - Low Temperature: 52 Degrees
(Tip: Place your cursor over the bar below to see the number)
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Dolly or another tropical threat could track near US this week
New Hampshire can bill hikers for mountain rescues. A $25 card can help avoid the cost
Fall foliage forecast 2026: Where to expect the best color across the US
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