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

31°F

-1°C

Humidity 89%
Wind Speed N 8 mph
Barometer 29.77 in (1008.5 mb)
Dewpoint 28°F (-2°C)
Visibility 7.00 mi
Wind Chill24°F (-4°C)
Last update 21 Feb 4:55 am EST
Extended Forecast for

Portsmouth NH

Winter Weather Advisory February 21, 05:02am until February 21, 07:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory February 21, 05:02am until February 21, 07:00am

    NOW until 7:00am Sat

    Winter Weather Advisory

  • Overnight

    Low: 21 °F

    Chance Snow

  • Saturday

    Saturday: A 40 percent chance of snow, mainly before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 32. North wind 5 to 10 mph becoming light in the afternoon.

    High: 32 °F

    Chance Snow
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 18. Calm wind becoming north around 5 mph.

    Low: 18 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 34. Northeast wind 5 to 10 mph.

    High: 34 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Snow likely, mainly after 2am. Cloudy, with a low around 22. Northeast wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 22 °F

    Chance Snow
    then Snow
    Likely

  • Monday

    Monday: Snow. High near 31. Blustery. Chance of precipitation is 80%.

    High: 31 °F

    Snow and
    Blustery

  • Monday Night

    Monday Night: A 40 percent chance of snow before 11pm. Mostly cloudy, with a low around 18.

    Low: 18 °F

    Chance Snow
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

Detailed Forecast

Overnight
A 50 percent chance of snow. Cloudy, with a low around 21. North wind around 5 mph.
Saturday
A 40 percent chance of snow, mainly before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 32. North wind 5 to 10 mph becoming light in the afternoon.
Saturday Night
Partly cloudy, with a low around 18. Calm wind becoming north around 5 mph.
Sunday
Partly sunny, with a high near 34. Northeast wind 5 to 10 mph.
Sunday Night
Snow likely, mainly after 2am. Cloudy, with a low around 22. Northeast wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Monday
Snow. High near 31. Blustery. Chance of precipitation is 80%.
Monday Night
A 40 percent chance of snow before 11pm. Mostly cloudy, with a low around 18.
Tuesday
Mostly sunny, with a high near 32.
Tuesday Night
Partly cloudy, with a low around 9.
Wednesday
A 30 percent chance of snow after 3pm. Partly sunny, with a high near 34.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 24. Chance of precipitation is 50%.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 42.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.
Friday
A 30 percent chance of rain. Mostly sunny, with a high near 39.
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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:
3:18 am EST Feb 21, 2026
Forecast Valid:
5am EST Feb 21, 2026-6pm EST Feb 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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