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

30°F

-1°C

Humidity 49%
Wind Speed W 8 mph
Barometer 30.04 in (1017.6 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 13 Mar 8:55 am EDT
Extended Forecast for

Portsmouth NH

  • Today

    Today: Increasing clouds, with a high near 42. West wind around 5 mph becoming southwest in the afternoon.

    High: 42 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Rain and snow, mainly before 3am. Low around 31. South wind 5 to 10 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Chance
    Rain/Snow
    then
    Rain/Snow

  • Saturday

    Saturday: A 30 percent chance of rain, mainly before 8am. Mostly sunny, with a high near 47. West wind 10 to 15 mph, with gusts as high as 30 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 47 °F

    Chance Rain
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 24. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 41. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 41 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of rain after 3am. Cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain

  • Monday

    Monday: Rain, mainly after 8am. High near 57. Chance of precipitation is 100%.

    High: 57 °F

    Rain

  • Monday Night

    Monday Night: Rain. Low around 40. Windy. Chance of precipitation is 90%.

    Low: 40 °F

    Rain and
    Windy

  • Tuesday

    Tuesday: Rain likely, mainly before 8am. Partly sunny, with a high near 50. Chance of precipitation is 60%.

    High: 50 °F

    Rain Likely
    then Chance
    Rain

Detailed Forecast

Today
Increasing clouds, with a high near 42. West wind around 5 mph becoming southwest in the afternoon.
Tonight
Rain and snow, mainly before 3am. Low around 31. South wind 5 to 10 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Saturday
A 30 percent chance of rain, mainly before 8am. Mostly sunny, with a high near 47. West wind 10 to 15 mph, with gusts as high as 30 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Mostly clear, with a low around 24. West wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 41. Calm wind becoming southeast around 5 mph in the afternoon.
Sunday Night
A 30 percent chance of rain after 3am. Cloudy, with a low around 32.
Monday
Rain, mainly after 8am. High near 57. Chance of precipitation is 100%.
Monday Night
Rain. Low around 40. Windy. Chance of precipitation is 90%.
Tuesday
Rain likely, mainly before 8am. Partly sunny, with a high near 50. Chance of precipitation is 60%.
Tuesday Night
Mostly clear, with a low around 19.
Wednesday
Sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
Mostly cloudy, with a high near 41.
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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:
6:46 am EDT Mar 13, 2026
Forecast Valid:
9am EDT Mar 13, 2026-6pm EDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

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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