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.

Light Rain Fog/Mist

46°F

8°C

Humidity 96%
Wind Speed SE 3 mph
Barometer 29.74 in (1007.4 mb)
Dewpoint 45°F (7°C)
Visibility 0.75 mi
Last update 19 Apr 10:55 am EDT
Extended Forecast for

Portsmouth NH

  • Today

    Today: Rain and possibly a thunderstorm. Patchy fog before noon. High near 50. South wind around 5 mph becoming northwest in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 50 °F

    Rain and
    Patchy Fog

  • Tonight

    Tonight: Rain likely, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 33. West wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 33 °F

    Rain Likely
    then Clear

  • Monday

    Monday: A 30 percent chance of showers, mainly between 11am and 3pm. Increasing clouds, with a high near 49. West wind around 5 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 49 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 29. North wind around 5 mph.

    Low: 29 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 45. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 45 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 51.

    High: 51 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

Detailed Forecast

Today
Rain and possibly a thunderstorm. Patchy fog before noon. High near 50. South wind around 5 mph becoming northwest in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Rain likely, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 33. West wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
A 30 percent chance of showers, mainly between 11am and 3pm. Increasing clouds, with a high near 49. West wind around 5 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Partly cloudy, with a low around 29. North wind around 5 mph.
Tuesday
Sunny, with a high near 45. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 34.
Wednesday
Mostly cloudy, with a high near 51.
Wednesday Night
Mostly cloudy, with a low around 38.
Thursday
Partly sunny, with a high near 57.
Thursday Night
Partly cloudy, with a low around 37.
Friday
Mostly sunny, with a high near 54.
Friday Night
Partly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 53.
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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:
6:25 am EDT Apr 19, 2026
Forecast Valid:
11am EDT Apr 19, 2026-6pm EDT Apr 25, 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