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

35°F

2°C

Humidity 62%
Wind Speed Calm
Barometer 29.92 in (1013.5 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Last update 3 Dec 11:55 am EST
Extended Forecast for

Portsmouth NH

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 38. Northwest wind around 5 mph becoming southwest.

    High: 38 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 24. Calm wind becoming southwest around 5 mph after midnight.

    Low: 24 °F

    Mostly Cloudy

  • Thursday

    Thursday: Isolated snow showers before 11am, then scattered snow showers after 1pm. Partly sunny, with a high near 38. Southwest wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.

    High: 38 °F

    Isolated Snow
    Showers then
    Scattered
    Snow Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 6. Wind chill values as low as -5. Northwest wind 5 to 15 mph, with gusts as high as 30 mph.

    Low: 6 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 25. Southwest wind around 5 mph.

    High: 25 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 13.

    Low: 13 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow after 10am. Mostly cloudy, with a high near 33.

    High: 33 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 39.

    High: 39 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 38. Northwest wind around 5 mph becoming southwest.
Tonight
Mostly cloudy, with a low around 24. Calm wind becoming southwest around 5 mph after midnight.
Thursday
Isolated snow showers before 11am, then scattered snow showers after 1pm. Partly sunny, with a high near 38. Southwest wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Thursday Night
Mostly clear, with a low around 6. Wind chill values as low as -5. Northwest wind 5 to 15 mph, with gusts as high as 30 mph.
Friday
Mostly sunny, with a high near 25. Southwest wind around 5 mph.
Friday Night
Mostly cloudy, with a low around 13.
Saturday
A 30 percent chance of snow after 10am. Mostly cloudy, with a high near 33.
Saturday Night
Mostly cloudy, with a low around 20.
Sunday
Partly sunny, with a high near 39.
Sunday Night
Partly cloudy, with a low around 14.
Monday
Mostly sunny, with a high near 26.
Monday Night
Partly cloudy, with a low around 8.
Tuesday
Mostly sunny, with a high near 30.
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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:
12:42 pm EST Dec 3, 2025
Forecast Valid:
12pm EST Dec 3, 2025-6pm EST Dec 9, 2025
 
Forecast Discussion
 
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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