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

31°F

-1°C

Humidity 93%
Wind Speed SW 5 mph
Barometer 29.70 in (1006.1 mb)
Dewpoint 29°F (-2°C)
Visibility 7.00 mi
Wind Chill26°F (-3°C)
Last update 14 Mar 7:55 am EDT
Extended Forecast for

Portsmouth NH

  • Today

    Today: Sunny through mid morning, then becoming mostly cloudy, with a high near 44. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 44 °F

    Mostly Cloudy
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 25. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 25 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Sunday

    Sunday: Partly sunny, with a high near 41. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.

    High: 41 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of rain after 3am. Mostly cloudy, with a low around 32. Southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain

  • Monday

    Monday: Rain, mainly after 7am. High near 56. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.

    High: 56 °F

    Rain

  • Monday Night

    Monday Night: Rain. Low around 43. Breezy. Chance of precipitation is 100%.

    Low: 43 °F

    Rain and
    Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 38.

    High: 38 °F

    Sunny

Detailed Forecast

Today
Sunny through mid morning, then becoming mostly cloudy, with a high near 44. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 25. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.
Sunday
Partly sunny, with a high near 41. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.
Sunday Night
A 30 percent chance of rain after 3am. Mostly cloudy, with a low around 32. Southeast wind around 10 mph, with gusts as high as 20 mph.
Monday
Rain, mainly after 7am. High near 56. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.
Monday Night
Rain. Low around 43. Breezy. Chance of precipitation is 100%.
Tuesday
Partly sunny, with a high near 48.
Tuesday Night
Mostly clear, with a low around 19.
Wednesday
Sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 25.
Thursday
Mostly cloudy, with a high near 42.
Thursday Night
Partly cloudy, with a low around 28.
Friday
Mostly sunny, with a high near 44.
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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:
6:37 am EDT Mar 14, 2026
Forecast Valid:
8am EDT Mar 14, 2026-6pm EDT Mar 20, 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