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.

Overcast

47°F

8°C

Humidity 63%
Wind Speed Calm
Barometer 29.63 in (1003.7 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 14 Jan 9:55 am EST
Extended Forecast for

Portsmouth NH

  • Today

    Today: A slight chance of showers before 2pm, then a slight chance of showers after 4pm. Mostly cloudy, with a high near 49. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 49 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: Showers likely, mainly after 3am. Areas of fog after 3am. Otherwise, cloudy, with a low around 36. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Showers
    Likely and
    Areas Fog

  • Thursday

    Thursday: A 30 percent chance of showers, mainly before 11am. Areas of fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 45. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Chance
    Showers and
    Areas Fog

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 15. West wind around 10 mph, with gusts as high as 20 mph.

    Low: 15 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 30. West wind around 10 mph, with gusts as high as 20 mph.

    High: 30 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

Detailed Forecast

Today
A slight chance of showers before 2pm, then a slight chance of showers after 4pm. Mostly cloudy, with a high near 49. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tonight
Showers likely, mainly after 3am. Areas of fog after 3am. Otherwise, cloudy, with a low around 36. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A 30 percent chance of showers, mainly before 11am. Areas of fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 45. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Partly cloudy, with a low around 15. West wind around 10 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 30. West wind around 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
Partly sunny, with a high near 40.
Saturday Night
Mostly cloudy, with a low around 25.
Sunday
Partly sunny, with a high near 35.
Sunday Night
Partly cloudy, with a low around 19.
M.L.King Day
Mostly sunny, with a high near 31.
Monday Night
Mostly cloudy, with a low around 18.
Tuesday
Mostly sunny, with a high near 29.
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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:
6:13 am EST Jan 14, 2026
Forecast Valid:
10am EST Jan 14, 2026-6pm EST Jan 20, 2026
 
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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