National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

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 E 7 mph
Barometer 30.04 in (1017.6 mb)
Dewpoint 42°F (6°C)
Visibility 2.00 mi
Wind Chill40°F (4°C)
Last update 18 Apr 7:55 pm EDT
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Areas of fog after 11pm. Otherwise, cloudy, with a low around 41. East wind 5 to 10 mph becoming light in the evening.

    Low: 41 °F

    Areas Fog

  • Sunday

    Sunday: Rain, mainly after 10am. Areas of fog before 3pm. High near 49. Southeast wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 49 °F

    Rain and
    Areas Fog

  • Sunday Night

    Sunday Night: A 30 percent chance of rain, mainly before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 33. West wind 5 to 10 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 33 °F

    Chance Rain
    then Mostly
    Clear

  • Monday

    Monday: Mostly sunny, with a high near 49. West wind around 5 mph.

    High: 49 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 28. North wind around 5 mph.

    Low: 28 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Tuesday Night

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

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 52.

    High: 52 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

Detailed Forecast

Tonight
Areas of fog after 11pm. Otherwise, cloudy, with a low around 41. East wind 5 to 10 mph becoming light in the evening.
Sunday
Rain, mainly after 10am. Areas of fog before 3pm. High near 49. Southeast wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A 30 percent chance of rain, mainly before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 33. West wind 5 to 10 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 49. West wind around 5 mph.
Monday Night
Partly cloudy, with a low around 28. North wind around 5 mph.
Tuesday
Sunny, with a high near 46.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Mostly cloudy, with a high near 52.
Wednesday Night
Partly cloudy, with a low around 36.
Thursday
Mostly sunny, with a high near 58.
Thursday Night
Mostly cloudy, with a low around 38.
Friday
Mostly sunny, with a high near 57.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Partly sunny, with a high near 55.
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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:
6:37 pm EDT Apr 18, 2026
Forecast Valid:
8pm EDT Apr 18, 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