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.

Overcast

37°F

3°C

Humidity 77%
Wind Speed E 7 mph
Barometer 29.86 in (1011.5 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 20 Feb 1:55 pm EST
Extended Forecast for

Portsmouth NH

Winter Weather Advisory February 20, 02:47pm until February 21, 07:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory February 20, 02:47pm until February 21, 07:00am

    NOW until 7:00am Sat

    Winter Weather Advisory

  • This Afternoon

    High: 37 °F

    Rain/Snow

  • Tonight

    Tonight: Snow, mainly before 4am. Low around 21. East wind around 5 mph becoming north after midnight. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 21 °F

    Snow

  • Saturday

    Saturday: A 30 percent chance of snow, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 32. North wind around 5 mph becoming calm in the afternoon.

    High: 32 °F

    Chance Snow
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 19. Calm wind becoming north around 5 mph.

    Low: 19 °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 4am. Cloudy, with a low around 23. Chance of precipitation is 60%.

    Low: 23 °F

    Chance Snow
    then Snow
    Likely

  • Monday

    Monday: Snow likely, mainly before 1pm. Cloudy, with a high near 31. Blustery. Chance of precipitation is 60%.

    High: 31 °F

    Snow Likely
    and Blustery

  • Monday Night

    Monday Night: A 40 percent chance of snow before 10pm. Mostly cloudy, with a low around 16.

    Low: 16 °F

    Chance Snow
    then Mostly
    Cloudy

Detailed Forecast

This Afternoon
Snow likely before 5pm, then rain, possibly mixed with snow. High near 37. East wind around 5 mph. Chance of precipitation is 80%. Total daytime snow accumulation of around an inch possible.
Tonight
Snow, mainly before 4am. Low around 21. East wind around 5 mph becoming north after midnight. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Saturday
A 30 percent chance of snow, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 32. North wind around 5 mph becoming calm in the afternoon.
Saturday Night
Partly cloudy, with a low around 19. 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 4am. Cloudy, with a low around 23. Chance of precipitation is 60%.
Monday
Snow likely, mainly before 1pm. Cloudy, with a high near 31. Blustery. Chance of precipitation is 60%.
Monday Night
A 40 percent chance of snow before 10pm. Mostly cloudy, with a low around 16.
Tuesday
Mostly sunny, with a high near 33.
Tuesday Night
Partly cloudy, with a low around 9.
Wednesday
Mostly cloudy, with a high near 36.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. Chance of precipitation is 50%.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 43. Chance of precipitation is 50%.
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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:
2:04 pm EST Feb 20, 2026
Forecast Valid:
2pm EST Feb 20, 2026-6pm EST Feb 26, 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