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Portsmouth, NH Weather
Current conditions
Observed at Pease Air Force Base / Portsmouth · 1 hr ago
Forecast
10-day-
Tonight
Mostly clear, with a low around 36. Southwest wind around 5 mph.
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Monday
Sunny, with a high near 66. West wind around 5 mph.
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Monday Night
Mostly clear, with a low around 37. Northwest wind around 5 mph.
National Weather Service forecast updated 16 hrs ago.
Hourly
Hourly forecast- Now56°
- 7 PM51°
- 8 PM47°
- 9 PM45°
- 10 PM43°
- 11 PM42°
- Mon12 AM40°
- 1 AM39°
- 2 AM38°
- 3 AM38°
- 4 AM37°
- 5 AM36°
- 6 AM37°
- 7 AM37°
- 8 AM38°
- 9 AM46°
- 10 AM52°
- 11 AM58°
- 12 PM62°
- 1 PM64°
- 2 PM66°
- 3 PM66°
- 4 PM65°
- 5 PM64°
10-day forecast
Details- TodayOct 25Sunny36°62°
- MonOct 26Sunny37°66°
- TueOct 27Sunny29°52°
- WedOct 28Sunny36°52°
- ThuOct 29Sunny47°65°
- FriOct 30Sunny42°66°
- SatOct 31Mostly Sunny45°61°
- SunNov 1Cloudy43°64°
- MonNov 2Light rain0.14 in40°62°
- TueNov 3Sunny35°48°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Portsmouth
More weather news-
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Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Forecast
- SunGood
- MonGood
Coastal Rockingham County, NH reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyPortsmouth Pease Afb, records since 1956. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Manchester 57 km
- Lawrence 53 km
- Haverhill 42 km
- Methuen 53 km
- Beverly 59 km
- Beverly Cove 59 km
- Derry Village 50 km
- Dover 16 km
- Rochester 31 km
- Gloucester 52 km
- Salem 48 km
- North Andover 52 km
Forecasters' discussion
From the National Weather Service office in GYX, issued 3 hrs ago
What Has Changed
A Small Craft Advisory has been issued for Monday night into Tuesday morning.
Key Messages
1. A dry cold front brings a shot of cooler air Tuesday. Otherwise dry conditions continue through the week under high pressure
Discussion
KEY MESSAGE 1 DESCRIPTION...
Return flow around high pressure south of New England will allow a warming trend to continue into Monday when highs south of the mountains push into the upper 60s to low 70s. A weak cold front crosses during the afternoon bringing some clouds and some showers near the Canadian Border. A new Canadian high pressure system builds in behind the front with highs on Tuesday in the 40s and 50s followed by overnight lows in the 20s.
The high starts to shift offshore Wednesday and Thursday allowing temperatures to moderate again. Another weak front crosses late Thursday into Friday bringing low chances for showers. High pressure returns behind the front providing mostly dry weather to close out the week.
Aviation
Through Monday: Mainly VFR. Fog did form at LEB early this morning and have gone with a persistence forecast there tonight. A front crosses Monday afternoon and evening that could bring TEMPO MVFR at HIE.
Outlook...
Monday night-Thursday...Mainly VFR. Steady NW winds MOnday night into Tuesday will likely will become light and variable again late Tuesday through Thursday.
Friday: A front crosses Thursday night and Friday that could bring MVFR to the mountains. Otherwise, conditions likely stay VFR.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use. How to use Weather