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

28°F

-2°C

Humidity 47%
Wind Speed NW 5 mph
Barometer 29.89 in (1012.5 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 18 Feb 11:55 pm EST
Extended Forecast for

Portsmouth NH

  • Overnight

    Overnight: Partly cloudy, with a low around 20. North wind around 5 mph.

    Low: 20 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 38. Calm wind.

    High: 38 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 23. Calm wind.

    Low: 23 °F

    Increasing
    Clouds

  • Friday

    Friday: Snow likely, mainly after 4pm. Cloudy, with a high near 38. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 38 °F

    Mostly Cloudy
    then Snow
    Likely

  • Friday Night

    Friday Night: Snow. Low around 22. Northeast wind around 5 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 22 °F

    Snow

  • Saturday

    Saturday: A 40 percent chance of snow before 11am. Mostly cloudy, with a high near 32.

    High: 32 °F

    Chance Snow
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Overnight
Partly cloudy, with a low around 20. North wind around 5 mph.
Thursday
Sunny, with a high near 38. Calm wind.
Thursday Night
Increasing clouds, with a low around 23. Calm wind.
Friday
Snow likely, mainly after 4pm. Cloudy, with a high near 38. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday Night
Snow. Low around 22. Northeast wind around 5 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Saturday
A 40 percent chance of snow before 11am. Mostly cloudy, with a high near 32.
Saturday Night
Partly cloudy, with a low around 20.
Sunday
Mostly sunny, with a high near 34.
Sunday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 22.
Monday
A 30 percent chance of snow. Mostly cloudy, with a high near 35.
Monday Night
Mostly cloudy, with a low around 17.
Tuesday
Sunny, with a high near 33.
Tuesday Night
Partly cloudy, with a low around 10.
Wednesday
Partly sunny, with a high near 35.
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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:
12:30 am EST Feb 19, 2026
Forecast Valid:
12am EST Feb 19, 2026-6pm EST Feb 25, 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