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.

Partly Cloudy

54°F

12°C

Humidity 61%
Wind Speed E 12 G 20 mph
Barometer 30.18 in (1022.3 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 18 Apr 10:55 am EDT
Extended Forecast for

Portsmouth NH

  • Today

    Today: Mostly cloudy, with a high near 53. East wind around 10 mph, with gusts as high as 20 mph.

    High: 53 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, cloudy, with a low around 41. East wind around 5 mph becoming calm in the evening.

    Low: 41 °F

    Cloudy then
    Patchy Fog

  • Sunday

    Sunday: Rain, mainly after 8am. Patchy fog before 9am. High near 51. South wind around 5 mph becoming northwest in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 51 °F

    Rain and
    Patchy Fog

  • Sunday Night

    Sunday Night: Rain likely, mainly before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 33. West wind around 5 mph. Chance of precipitation is 60%.

    Low: 33 °F

    Rain Likely
    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.

    Low: 28 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 53. East wind around 10 mph, with gusts as high as 20 mph.
Tonight
Patchy fog after 1am. Otherwise, cloudy, with a low around 41. East wind around 5 mph becoming calm in the evening.
Sunday
Rain, mainly after 8am. Patchy fog before 9am. High near 51. South wind around 5 mph becoming northwest in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain likely, mainly before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 33. West wind around 5 mph. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 49. West wind around 5 mph.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
Sunny, with a high near 47.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 55.
Wednesday Night
Partly cloudy, with a low around 36.
Thursday
Mostly sunny, with a high near 57.
Thursday Night
Partly cloudy, with a low around 38.
Friday
Partly sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.05°N 70.78°W (Elev. 49 ft)
Last Update:
8:37 am EDT Apr 18, 2026
Forecast Valid:
11am EDT Apr 18, 2026-6pm EDT Apr 24, 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