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

34°F

1°C

Humidity 26%
Wind Speed W 6 mph
Barometer 30.34 in (1027.8 mb)
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 28 Mar 5:55 pm EDT
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 24. Southwest wind around 5 mph becoming calm in the evening.

    Low: 24 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Increasing clouds, with a high near 47. Southwest wind 5 to 10 mph.

    High: 47 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 34. Southwest wind around 5 mph.

    Low: 34 °F

    Increasing
    Clouds

  • Monday

    Monday: Partly sunny, with a high near 59. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 59 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43. Southwest wind around 5 mph.

    Low: 43 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of rain. Mostly cloudy, with a high near 61.

    High: 61 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance Rain

  • Wednesday

    Wednesday: A 40 percent chance of rain. Mostly cloudy, with a high near 66.

    High: 66 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain before 5am. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 24. Southwest wind around 5 mph becoming calm in the evening.
Sunday
Increasing clouds, with a high near 47. Southwest wind 5 to 10 mph.
Sunday Night
Increasing clouds, with a low around 34. Southwest wind around 5 mph.
Monday
Partly sunny, with a high near 59. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 43. Southwest wind around 5 mph.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 61.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 48.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 66.
Wednesday Night
A 50 percent chance of rain before 5am. Mostly cloudy, with a low around 32.
Thursday
A chance of snow before 11am, then a chance of rain and snow between 11am and 2pm, then a chance of snow after 2pm. Partly sunny, with a high near 43. Chance of precipitation is 40%.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 31.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 39. Chance of precipitation is 50%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 50%.
Saturday
A 30 percent chance of rain. Mostly cloudy, with a high near 43.
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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:
2:40 pm EDT Mar 28, 2026
Forecast Valid:
6pm EDT Mar 28, 2026-6pm EDT Apr 4, 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