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.

Fog/Mist

44°F

7°C

Humidity 92%
Wind Speed W 3 mph
Barometer 29.78 in (1008.8 mb)
Dewpoint 42°F (6°C)
Visibility 4.00 mi
Last update 5 Apr 11:55 am EDT
Extended Forecast for

Portsmouth NH

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. Patchy fog. High near 54. West wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 54 °F

    Showers and
    Patchy Fog

  • Tonight

    Tonight: Showers likely, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 35. West wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Showers
    Likely then
    Partly Cloudy

  • Monday

    Monday: Increasing clouds, with a high near 49. West wind around 10 mph, with gusts as high as 20 mph.

    High: 49 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30. West wind around 5 mph becoming calm.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of rain and snow showers. Partly sunny, with a high near 44. North wind 5 to 10 mph. Chance of precipitation is 50%.

    High: 44 °F

    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 44.

    High: 44 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. Patchy fog. High near 54. West wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers likely, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 35. West wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Increasing clouds, with a high near 49. West wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 30. West wind around 5 mph becoming calm.
Tuesday
A chance of rain and snow showers. Partly sunny, with a high near 44. North wind 5 to 10 mph. Chance of precipitation is 50%.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Sunny, with a high near 44.
Wednesday Night
Mostly clear, with a low around 30.
Thursday
Sunny, with a high near 54.
Thursday Night
Partly cloudy, with a low around 39.
Friday
Mostly sunny, with a high near 58.
Friday Night
Partly cloudy, with a low around 38.
Saturday
Mostly sunny, with a high near 57.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.07°N 70.78°W (Elev. 33 ft)
Last Update:
6:27 am EDT Apr 5, 2026
Forecast Valid:
12pm EDT Apr 5, 2026-6pm EDT Apr 11, 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