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

73°F

23°C

Humidity 90%
Wind Speed W 7 mph
Barometer 29.87 in (1011.7 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 9 Aug 1:55 am EDT
Extended Forecast for

Portsmouth NH

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly clear, with a low around 68. Calm wind becoming west around 5 mph.

    Low: 68 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 7am. Otherwise, sunny and hot, with a high near 90. West wind 5 to 10 mph.

    High: 90 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 66. West wind around 5 mph becoming calm.

    Low: 66 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 84. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 66. Calm wind becoming west around 5 mph.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly clear, with a low around 68. Calm wind becoming west around 5 mph.
Sunday
Patchy fog before 7am. Otherwise, sunny and hot, with a high near 90. West wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 66. West wind around 5 mph becoming calm.
Monday
Mostly sunny, with a high near 84. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 66. Calm wind becoming west around 5 mph.
Tuesday
Sunny, with a high near 88.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
Mostly sunny, with a high near 85.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 40%.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 81.
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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:
2:32 am EDT Aug 9, 2026
Forecast Valid:
2am EDT Aug 9, 2026-6pm EDT Aug 15, 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