Current conditions at

Pease Air Force Base / Portsmouth (KPSM)

Lat: 43.08°NLon: 70.82°WElev: 102ft.

Fog/Mist

30°F

-1°C

Humidity 89%
Wind Speed S 3 mph
Barometer 30.03 in (1017.3 mb)
Dewpoint 28°F (-2°C)
Visibility 5.00 mi
Last update 18 Jan 10:55 am EST
Extended Forecast for

Portsmouth NH

Winter Weather Advisory until January 19, 01:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until January 19, 01:00pm

    NOW until 1:00pm Mon

    Winter Weather Advisory

  • Today

    High: 34 °F

    Chance
    Rain/Snow

  • Tonight

    Tonight: Snow, mainly after 7pm. The snow could be heavy at times.  Low around 24. Calm wind becoming north around 5 mph.  Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 24 °F

    Heavy Snow

  • M.L.King Day

    M.L.King Day: Snow likely, mainly before 10am.  Partly sunny, with a high near 33. Northwest wind 5 to 10 mph becoming southwest in the afternoon.  Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Snow Likely
    then Chance
    Snow

  • Monday Night

    Monday Night: Partly cloudy, with a low around 16. Southwest wind around 10 mph.

    Low: 16 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 24. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 24 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 10.

    Low: 10 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

Detailed Forecast

Today
A chance of rain and snow before 2pm, then a chance of snow between 2pm and 4pm, then a chance of rain and snow after 4pm. Cloudy, with a high near 34. Southwest wind around 5 mph becoming calm. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Snow, mainly after 7pm. The snow could be heavy at times. Low around 24. Calm wind becoming north around 5 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
M.L.King Day
Snow likely, mainly before 10am. Partly sunny, with a high near 33. Northwest wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday Night
Partly cloudy, with a low around 16. Southwest wind around 10 mph.
Tuesday
Mostly sunny, with a high near 24. West wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 10.
Wednesday
Mostly sunny, with a high near 30.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
Mostly sunny, with a high near 37.
Thursday Night
Partly cloudy, with a low around 15.
Friday
Mostly sunny, with a high near 27.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 30.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.05°N 70.78°W (Elev. 49 ft)
6:20 am EST Jan 18, 2026
11am EST Jan 18, 2026-6pm EST Jan 24, 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