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

14°F

-10°C

Humidity 69%
Wind Speed N 10 mph
Barometer 30.15 in (1021.4 mb)
Dewpoint 6°F (-14°C)
Visibility 10.00 mi
Wind Chill1°F (-17°C)
Last update 27 Dec 8:55 am EST
Extended Forecast for

Portsmouth NH

  • Today

    Today: A 20 percent chance of snow before 10am. Cloudy early, then gradual clearing, with a high near 26. North wind around 5 mph.

    High: 26 °F

    Slight Chance
    Snow then
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 12. Calm wind.

    Low: 12 °F

    Mostly Clear

  • Sunday

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

    High: 36 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Freezing rain, mainly after 11pm. Low around 24. Calm wind becoming south around 5 mph. Chance of precipitation is 80%.

    Low: 24 °F

    Chance
    Freezing Rain
    then Freezing
    Rain

  • Monday

    Monday: Rain or freezing rain, becoming all rain after 7am. High near 41. Southeast wind around 5 mph. Chance of precipitation is 90%.

    High: 41 °F

    Rain/Freezing
    Rain then
    Rain

  • Monday Night

    Monday Night: A 30 percent chance of rain before 7pm. Mostly cloudy, with a low around 22.

    Low: 22 °F

    Chance Rain
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

Detailed Forecast

Today
A 20 percent chance of snow before 10am. Cloudy early, then gradual clearing, with a high near 26. North wind around 5 mph.
Tonight
Mostly clear, with a low around 12. Calm wind.
Sunday
Mostly sunny, with a high near 36. West wind around 5 mph becoming calm in the afternoon.
Sunday Night
Freezing rain, mainly after 11pm. Low around 24. Calm wind becoming south around 5 mph. Chance of precipitation is 80%.
Monday
Rain or freezing rain, becoming all rain after 7am. High near 41. Southeast wind around 5 mph. Chance of precipitation is 90%.
Monday Night
A 30 percent chance of rain before 7pm. Mostly cloudy, with a low around 22.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
Partly cloudy, with a low around 17.
Wednesday
Partly sunny, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 19.
New Year's Day
Mostly sunny, with a high near 30.
Thursday Night
Partly cloudy, with a low around 12.
Friday
Mostly sunny, with a high near 24.
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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:
6:09 am EST Dec 27, 2025
Forecast Valid:
9am EST Dec 27, 2025-6pm EST Jan 2, 2026
 
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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