National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Pease Air Force Base / Portsmouth (KPSM)

Lat: 43.08°NLon: 70.82°WElev: 102ft.

Light Snow

25°F

-4°C

Humidity 78%
Wind Speed NW 3 mph
Barometer 29.92 in (1013.6 mb)
Dewpoint 19°F (-7°C)
Visibility 3.00 mi
Last update 6 Dec 9:55 am EST
Extended Forecast for

Portsmouth NH

  • Today

    Today: Snow likely, mainly before noon. Cloudy, then gradually becoming mostly sunny, with a high near 35. Calm wind becoming southwest around 5 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.

    High: 35 °F

    Snow Likely

  • Tonight

    Tonight: Partly cloudy, with a low around 22. Calm wind becoming west around 5 mph after midnight.

    Low: 22 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 36. Northwest wind around 5 mph becoming calm in the afternoon.

    High: 36 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of snow after 8pm. Mostly cloudy, with a low around 17. Calm wind becoming northwest around 5 mph after midnight.

    Low: 17 °F

    Chance Snow

  • Monday

    Monday: Sunny, with a high near 26. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 26 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 32.

    High: 32 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow between 9pm and midnight. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.

    Low: 23 °F

    Chance Snow
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of rain after 2pm. Mostly cloudy, with a high near 43.

    High: 43 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Today
Snow likely, mainly before noon. Cloudy, then gradually becoming mostly sunny, with a high near 35. Calm wind becoming southwest around 5 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Partly cloudy, with a low around 22. Calm wind becoming west around 5 mph after midnight.
Sunday
Partly sunny, with a high near 36. Northwest wind around 5 mph becoming calm in the afternoon.
Sunday Night
A 50 percent chance of snow after 8pm. Mostly cloudy, with a low around 17. Calm wind becoming northwest around 5 mph after midnight.
Monday
Sunny, with a high near 26. Northwest wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 8.
Tuesday
Partly sunny, with a high near 32.
Tuesday Night
A chance of snow between 9pm and midnight. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.
Wednesday
A 30 percent chance of rain after 2pm. Mostly cloudy, with a high near 43.
Wednesday Night
Rain likely, mainly between 9pm and midnight. Mostly cloudy, with a low around 30. Chance of precipitation is 60%.
Thursday
A 40 percent chance of rain. Partly sunny, with a high near 40.
Thursday Night
A 30 percent chance of snow. Partly cloudy, with a low around 18.
Friday
A 30 percent chance of snow. Mostly sunny, with a high near 33.
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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:
9:29 am EST Dec 6, 2025
Forecast Valid:
10am EST Dec 6, 2025-6pm EST Dec 12, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation