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.

Fair

36°F

2°C

Humidity 60%
Wind Speed SE 9 mph
Barometer 30.06 in (1018.3 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 27 Feb 2:55 pm EST
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Mostly clear, with a low around 22. South wind around 5 mph.

    Low: 22 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 46. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 46 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 25. Southwest wind around 5 mph becoming calm.

    Low: 25 °F

    Partly Cloudy

  • Sunday

    Sunday: A 50 percent chance of snow after 7am. Mostly cloudy, with a high near 35. North wind around 5 mph.

    High: 35 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 7. Northwest wind around 5 mph.

    Low: 7 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 24.

    High: 24 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 9.

    Low: 9 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of snow after 1pm, mixing with rain after 4pm. Partly sunny, with a high near 37. Chance of precipitation is 40%.

    High: 37 °F

    Partly Sunny
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain and snow likely before 4am, then a chance of rain. Mostly cloudy, with a low around 27. Chance of precipitation is 60%.

    Low: 27 °F

    Rain/Snow
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 22. South wind around 5 mph.
Saturday
Mostly sunny, with a high near 46. South wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 25. Southwest wind around 5 mph becoming calm.
Sunday
A 50 percent chance of snow after 7am. Mostly cloudy, with a high near 35. North wind around 5 mph.
Sunday Night
Mostly clear, with a low around 7. Northwest wind around 5 mph.
Monday
Sunny, with a high near 24.
Monday Night
Mostly clear, with a low around 9.
Tuesday
A chance of snow after 1pm, mixing with rain after 4pm. Partly sunny, with a high near 37. Chance of precipitation is 40%.
Tuesday Night
Rain and snow likely before 4am, then a chance of rain. Mostly cloudy, with a low around 27. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of rain before 10am. Mostly sunny, with a high near 46.
Wednesday Night
Mostly clear, with a low around 26.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 42. Chance of precipitation is 30%.
Thursday Night
Rain and snow likely. Cloudy, with a low around 26. Chance of precipitation is 60%.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 39. 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:
1:26 pm EST Feb 27, 2026
Forecast Valid:
3pm EST Feb 27, 2026-6pm EST Mar 6, 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