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.

Overcast

26°F

-3°C

Humidity 73%
Wind Speed NW 9 mph
Barometer 29.50 in (999.4 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 23 Feb 10:55 pm EST
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Patchy blowing snow before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 17. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 17 °F

    Patchy
    Blowing Snow

  • Tuesday

    Tuesday: Sunny, with a high near 30. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 30 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 9. West wind around 5 mph becoming calm in the evening.

    Low: 9 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Snow before 3pm, then a chance of rain. High near 36. Light south wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 36 °F

    Snow then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain before 7pm. Partly cloudy, with a low around 24. Southwest wind around 5 mph.

    Low: 24 °F

    Chance Rain
    then Mostly
    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of snow after 7pm. Mostly cloudy, with a low around 22.

    Low: 22 °F

    Chance Snow

  • Friday

    Friday: A 40 percent chance of snow before 10am. Partly sunny, with a high near 38.

    High: 38 °F

    Chance Snow
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 20.

    Low: 20 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy blowing snow before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 17. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 30. Northwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 9. West wind around 5 mph becoming calm in the evening.
Wednesday
Snow before 3pm, then a chance of rain. High near 36. Light south wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Wednesday Night
A 30 percent chance of rain before 7pm. Partly cloudy, with a low around 24. Southwest wind around 5 mph.
Thursday
Mostly sunny, with a high near 38.
Thursday Night
A 50 percent chance of snow after 7pm. Mostly cloudy, with a low around 22.
Friday
A 40 percent chance of snow before 10am. Partly sunny, with a high near 38.
Friday Night
Mostly clear, with a low around 20.
Saturday
Mostly sunny, with a high near 45.
Saturday Night
Partly cloudy, with a low around 25.
Sunday
Partly sunny, with a high near 39.
Sunday Night
Partly cloudy, with a low around 10.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 26.
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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:
7:37 pm EST Feb 23, 2026
Forecast Valid:
11pm EST Feb 23, 2026-6pm EST Mar 2, 2026
 
Forecast Discussion
 
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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