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.

Mostly Cloudy

58°F

14°C

Humidity 71%
Wind Speed Calm
Barometer 30.00 in (1016.2 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 3 Apr 5:55 pm EDT
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Partly cloudy, with a low around 48. West wind 5 to 10 mph.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 51. Northwest wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.

    High: 51 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers between 9pm and 2am, then rain likely after 2am. Mostly cloudy, with a low around 37. East wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Chance
    Showers then
    Rain Likely

  • Sunday

    Sunday: Rain, mainly before 5pm. High near 54. Southeast wind around 5 mph becoming southwest in the afternoon. Chance of precipitation is 100%.

    High: 54 °F

    Rain

  • Sunday Night

    Sunday Night: A 30 percent chance of rain before 8pm. Mostly cloudy, with a low around 35. West wind around 5 mph.

    Low: 35 °F

    Chance Rain
    then Partly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 48. West wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 51. Northwest wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
A chance of showers between 9pm and 2am, then rain likely after 2am. Mostly cloudy, with a low around 37. East wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Rain, mainly before 5pm. High near 54. Southeast wind around 5 mph becoming southwest in the afternoon. Chance of precipitation is 100%.
Sunday Night
A 30 percent chance of rain before 8pm. Mostly cloudy, with a low around 35. West wind around 5 mph.
Monday
Mostly sunny, with a high near 49.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Mostly sunny, with a high near 47.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
Sunny, with a high near 46.
Wednesday Night
Mostly clear, with a low around 32.
Thursday
Mostly sunny, with a high near 57.
Thursday Night
Mostly cloudy, with a low around 40.
Friday
Partly sunny, with a high near 57.
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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:
2:30 pm EDT Apr 3, 2026
Forecast Valid:
6pm EDT Apr 3, 2026-6pm EDT Apr 10, 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