National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Pease Air Force Base / Portsmouth (KPSM)

Lat: 43.08°NLon: 70.82°WElev: 102ft.

Overcast

61°F

16°C

Humidity 54%
Wind Speed Calm
Barometer 29.69 in (1005.7 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 26 Mar 5:55 pm EDT
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Rain before 2am, then showers likely, mainly between 2am and 5am. Patchy fog after 9pm. Low around 37. Southwest wind 5 to 10 mph becoming light and variable. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 37 °F

    Rain and
    Patchy Fog

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 45. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 45 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 21. North wind around 5 mph.

    Low: 21 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 34. North wind around 5 mph.

    High: 34 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 21. Calm wind becoming west around 5 mph.

    Low: 21 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Rain before 2am, then showers likely, mainly between 2am and 5am. Patchy fog after 9pm. Low around 37. Southwest wind 5 to 10 mph becoming light and variable. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 45. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 21. North wind around 5 mph.
Saturday
Mostly sunny, with a high near 34. North wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 21. Calm wind becoming west around 5 mph.
Sunday
Mostly sunny, with a high near 47.
Sunday Night
Mostly cloudy, with a low around 34.
Monday
Mostly cloudy, with a high near 55.
Monday Night
Mostly cloudy, with a low around 36.
Tuesday
A 30 percent chance of rain after 10am. Mostly cloudy, with a high near 48.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 39. Chance of precipitation is 40%.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 55. Chance of precipitation is 50%.
Wednesday Night
A 40 percent chance of rain. Cloudy, with a low around 39.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.07°N 70.78°W (Elev. 33 ft)
Last Update:
4:46 pm EDT Mar 26, 2026
Forecast Valid:
6pm EDT Mar 26, 2026-6pm EDT Apr 2, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation