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.

Fog/Mist

33°F

1°C

Humidity 93%
Wind Speed SW 5 mph
Barometer 29.98 in (1015.6 mb)
Dewpoint 31°F (-1°C)
Visibility 6.00 mi
Wind Chill28°F (-2°C)
Last update 17 Jan 6:55 pm EST
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Mostly cloudy, with a low around 28. Southwest wind around 5 mph.

    Low: 28 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain and snow before 1pm, then a chance of snow after 2pm. Cloudy, with a high near 37. Southwest wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 37 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly before 11pm. Mostly cloudy, with a low around 22. Calm wind becoming northwest around 5 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    Low: 22 °F

    Snow Likely

  • M.L.King Day

    M.L.King Day: Partly sunny, with a high near 33. Southwest wind 5 to 10 mph.

    High: 33 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 15. West wind 5 to 10 mph.

    Low: 15 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 10.

    Low: 10 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 28. Southwest wind around 5 mph.
Sunday
A slight chance of rain and snow before 1pm, then a chance of snow after 2pm. Cloudy, with a high near 37. Southwest wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Snow likely, mainly before 11pm. Mostly cloudy, with a low around 22. Calm wind becoming northwest around 5 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
M.L.King Day
Partly sunny, with a high near 33. Southwest wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 15. West wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 24.
Tuesday Night
Mostly clear, with a low around 10.
Wednesday
Mostly sunny, with a high near 31.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
Partly sunny, with a high near 36.
Thursday Night
Partly cloudy, with a low around 14.
Friday
Mostly sunny, with a high near 27.
Friday Night
Mostly cloudy, with a low around 16.
Saturday
Partly sunny, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.05°N 70.78°W (Elev. 49 ft)
Last Update:
4:56 pm EST Jan 17, 2026
Forecast Valid:
7pm EST Jan 17, 2026-6pm EST Jan 24, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation