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

42°F

6°C

Humidity 61%
Wind Speed Calm
Barometer 30.19 in (1022.7 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 20 Nov 3:55 pm EST
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Partly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 49. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 49 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 36. Southwest wind around 5 mph.

    Low: 36 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 47. Northwest wind 5 to 10 mph.

    High: 47 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 27. Northwest wind around 5 mph.

    Low: 27 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 27. Calm wind.
Friday
Mostly sunny, with a high near 49. Light southwest wind increasing to 5 to 10 mph in the morning.
Friday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 36. Southwest wind around 5 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 47. Northwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 27. Northwest wind around 5 mph.
Sunday
Mostly sunny, with a high near 45.
Sunday Night
Partly cloudy, with a low around 30.
Monday
Sunny, with a high near 49.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
A 30 percent chance of showers after 3pm. Mostly cloudy, with a high near 48.
Tuesday Night
Showers. Low around 38. Chance of precipitation is 80%.
Wednesday
Showers likely. Mostly cloudy, with a high near 55. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 39.
Thanksgiving Day
A 30 percent chance of showers. Partly sunny, with a high near 51.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.05°N 70.78°W (Elev. 49 ft)
Last Update:
12:16 pm EST Nov 20, 2025
Forecast Valid:
4pm EST Nov 20, 2025-6pm EST Nov 27, 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