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

68°F

20°C

Humidity 81%
Wind Speed SE 5 mph
Barometer 29.89 in (1012.4 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 8 Jul 9:55 pm EDT
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Mostly clear, with a low around 64. Southwest wind around 5 mph.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 90. Heat index values as high as 95. West wind around 5 mph.

    High: 90 °F

    Hot

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 69. Southwest wind around 5 mph.

    Low: 69 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 5pm. Partly sunny, with a high near 86. West wind around 5 mph. Chance of precipitation is 60%.

    High: 86 °F

    Mostly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 64. Southwest wind around 5 mph.
Thursday
Mostly sunny and hot, with a high near 90. Heat index values as high as 95. West wind around 5 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 69. Southwest wind around 5 mph.
Friday
Showers likely, with thunderstorms also possible after 5pm. Partly sunny, with a high near 86. West wind around 5 mph. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 66. Calm wind.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 63.
Sunday
Sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 64.
Monday
Sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Mostly sunny and hot, with a high near 92.
Tuesday Night
Partly cloudy, with a low around 71.
Wednesday
Mostly sunny and hot, with a high near 95.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.05°N 70.78°W (Elev. 49 ft)
Last Update:
2:18 pm EDT Jul 8, 2026
Forecast Valid:
10pm EDT Jul 8, 2026-6pm EDT Jul 15, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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