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.

Partly Cloudy

45°F

7°C

Humidity 57%
Wind Speed S 13 mph
Barometer 30.41 in (1030.1 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 9 Apr 6:55 pm EDT
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Mostly clear, with a low around 34. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 62. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 62 °F

    Sunny

  • Friday Night

    Friday Night: A 50 percent chance of showers, mainly after 9pm. Mostly cloudy, with a low around 42. South wind around 5 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 54. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 54 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 33. Northwest wind around 5 mph becoming calm in the evening.

    Low: 33 °F

    Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of showers after 10pm. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance
    Showers

  • Monday

    Monday: A 40 percent chance of showers before 1pm. Mostly cloudy, with a high near 66.

    High: 66 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 34. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 62. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
A 50 percent chance of showers, mainly after 9pm. Mostly cloudy, with a low around 42. South wind around 5 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 54. Northwest wind around 10 mph, with gusts as high as 20 mph.
Saturday Night
Clear, with a low around 33. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
A 50 percent chance of showers after 10pm. Mostly cloudy, with a low around 41.
Monday
A 40 percent chance of showers before 1pm. Mostly cloudy, with a high near 66.
Monday Night
Mostly cloudy, with a low around 54.
Tuesday
Partly sunny, with a high near 71.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 48.
Wednesday
Mostly cloudy, with a high near 61.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 45.
Thursday
Partly sunny, with a high near 65.
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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:
2:24 pm EDT Apr 9, 2026
Forecast Valid:
7pm EDT Apr 9, 2026-6pm EDT Apr 16, 2026
 
Forecast Discussion
 
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Additional Resources

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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