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.

A Few Clouds

22°F

-6°C

Humidity 48%
Wind Speed SE 5 mph
Barometer 30.60 in (1036.7 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 2 Mar 5:55 pm EST
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Clear, with a low around 14. Calm wind becoming southwest around 5 mph.

    Low: 14 °F

    Clear

  • Tuesday

    Tuesday: Snow likely, mainly after 4pm. Increasing clouds, with a high near 36. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 36 °F

    Mostly Sunny
    then Snow
    Likely

  • Tuesday Night

    Tuesday Night: Snow, possibly mixed with rain, becoming all snow after 8pm. Low around 28. South wind around 5 mph becoming calm. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    Low: 28 °F

    Rain/Snow
    then Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow before 8am. Partly sunny, then gradually becoming sunny, with a high near 50. West wind around 5 mph becoming calm.

    High: 50 °F

    Chance Snow
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of rain before 8pm, then rain and snow likely. Cloudy, with a low around 30. Chance of precipitation is 60%.

    Low: 30 °F

    Rain/Snow
    Likely

  • Friday

    Friday: Rain and snow likely, mainly before 1pm. Cloudy, with a high near 38. Chance of precipitation is 70%.

    High: 38 °F

    Rain/Snow
    Likely

  • Friday Night

    Friday Night: A chance of rain and snow before 10pm, then a chance of rain after 1am. Cloudy, with a low around 29. Chance of precipitation is 30%.

    Low: 29 °F

    Chance
    Rain/Snow
    then Chance
    Rain

Detailed Forecast

Tonight
Clear, with a low around 14. Calm wind becoming southwest around 5 mph.
Tuesday
Snow likely, mainly after 4pm. Increasing clouds, with a high near 36. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Tuesday Night
Snow, possibly mixed with rain, becoming all snow after 8pm. Low around 28. South wind around 5 mph becoming calm. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Wednesday
A 30 percent chance of snow before 8am. Partly sunny, then gradually becoming sunny, with a high near 50. West wind around 5 mph becoming calm.
Wednesday Night
Mostly clear, with a low around 26. Calm wind.
Thursday
Partly sunny, with a high near 44.
Thursday Night
A chance of rain before 8pm, then rain and snow likely. Cloudy, with a low around 30. Chance of precipitation is 60%.
Friday
Rain and snow likely, mainly before 1pm. Cloudy, with a high near 38. Chance of precipitation is 70%.
Friday Night
A chance of rain and snow before 10pm, then a chance of rain after 1am. Cloudy, with a low around 29. Chance of precipitation is 30%.
Saturday
A 30 percent chance of rain before 9am. Mostly cloudy, with a high near 48.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 38.
Sunday
A 30 percent chance of rain. Partly sunny, with a high near 56.
Sunday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 35.
Monday
Mostly sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.07°N 70.78°W (Elev. 33 ft)
Last Update:
1:26 pm EST Mar 2, 2026
Forecast Valid:
6pm EST Mar 2, 2026-6pm EDT Mar 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation