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

62°F

17°C

Humidity 46%
Wind Speed NE 6 mph
Barometer 30.39 in (1029.4 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 22 Sep 4:55 pm EDT
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Partly cloudy, with a low around 45. East wind around 5 mph becoming calm.

    Low: 45 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 62. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 62 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 46. North wind around 5 mph.

    Low: 46 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 63. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 63 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 46. Calm wind becoming north around 5 mph after midnight.

    Low: 46 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers after 4pm. Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers before 9pm. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers. Mostly cloudy, with a high near 64. Breezy.

    High: 64 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 45. East wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 62. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Clear, with a low around 46. North wind around 5 mph.
Thursday
Sunny, with a high near 63. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 46. Calm wind becoming north around 5 mph after midnight.
Friday
A 30 percent chance of showers after 4pm. Partly sunny, with a high near 66.
Friday Night
A 30 percent chance of showers before 9pm. Mostly cloudy, with a low around 52.
Saturday
A 40 percent chance of showers. Mostly cloudy, with a high near 64. Breezy.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 51.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 63.
Sunday Night
Showers likely. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
Monday
A 40 percent chance of showers. Mostly cloudy, with a high near 62.
Monday Night
Mostly cloudy, with a low around 49.
Tuesday
Mostly sunny, with a high near 67.
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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:
2:24 pm EDT Sep 22, 2026
Forecast Valid:
5pm EDT Sep 22, 2026-6pm EDT Sep 29, 2026
 
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