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.

Fair

37°F

3°C

Humidity 81%
Wind Speed W 12 mph
Barometer 29.89 in (1012.5 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 19 Apr 8:55 pm EDT
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 32. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 32 °F

    Decreasing
    Clouds

  • Monday

    Monday: A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 50. West wind around 5 mph.

    High: 50 °F

    Sunny then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 29. North wind around 5 mph.

    Low: 29 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 45. North wind around 5 mph becoming southeast in the afternoon.

    High: 45 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 33. South wind around 5 mph.

    Low: 33 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 49.

    High: 49 °F

    Mostly Cloudy

  • Wednesday Night

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

    Low: 36 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 32. West wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 50. West wind around 5 mph.
Monday Night
Mostly cloudy, with a low around 29. North wind around 5 mph.
Tuesday
Mostly sunny, with a high near 45. North wind around 5 mph becoming southeast in the afternoon.
Tuesday Night
Partly cloudy, with a low around 33. South wind around 5 mph.
Wednesday
Mostly cloudy, with a high near 49.
Wednesday Night
Mostly cloudy, with a low around 36.
Thursday
Partly sunny, with a high near 56.
Thursday Night
Partly cloudy, with a low around 37.
Friday
Mostly sunny, with a high near 54.
Friday Night
Partly cloudy, with a low around 38.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 53.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 41.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.05°N 70.78°W (Elev. 49 ft)
Last Update:
7:06 pm EDT Apr 19, 2026
Forecast Valid:
9pm EDT Apr 19, 2026-6pm EDT Apr 26, 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