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.

A Few Clouds

24°F

-4°C

Humidity 87%
Wind Speed Calm
Barometer 30.17 in (1022.1 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 16 Feb 8:55 pm EST
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: A 20 percent chance of snow showers after 4am. Mostly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of snow showers, mainly before 11am. Mostly cloudy, with a high near 38. Calm wind becoming south around 5 mph.

    High: 38 °F

    Chance Snow
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of snow before noon, then rain and snow likely between noon and 4pm, then snow likely after 4pm. Mostly cloudy, with a high near 37. Calm wind becoming west around 5 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Chance Snow
    then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Snow likely, mainly before 11pm. Mostly cloudy, with a low around 22. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 22 °F

    Snow Likely
    then Chance
    Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow after 11am, mixing with rain after 4pm. Mostly cloudy, with a high near 36. Chance of precipitation is 50%.

    High: 36 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Friday Night

    Friday Night: Rain and snow likely, becoming all snow after 8pm. Mostly cloudy, with a low around 23. Chance of precipitation is 60%.

    Low: 23 °F

    Rain/Snow
    Likely then
    Snow Likely

Detailed Forecast

Tonight
A 20 percent chance of snow showers after 4am. Mostly cloudy, with a low around 26. Calm wind.
Tuesday
A 30 percent chance of snow showers, mainly before 11am. Mostly cloudy, with a high near 38. Calm wind becoming south around 5 mph.
Tuesday Night
Partly cloudy, with a low around 26. Calm wind.
Wednesday
A chance of snow before noon, then rain and snow likely between noon and 4pm, then snow likely after 4pm. Mostly cloudy, with a high near 37. Calm wind becoming west around 5 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
Snow likely, mainly before 11pm. Mostly cloudy, with a low around 22. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Thursday
Mostly sunny, with a high near 39.
Thursday Night
Partly cloudy, with a low around 20.
Friday
A chance of snow after 11am, mixing with rain after 4pm. Mostly cloudy, with a high near 36. Chance of precipitation is 50%.
Friday Night
Rain and snow likely, becoming all snow after 8pm. Mostly cloudy, with a low around 23. Chance of precipitation is 60%.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 34.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 20.
Sunday
Mostly cloudy, with a high near 34.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 21.
Monday
A 30 percent chance of snow. Mostly sunny, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.07°N 70.78°W (Elev. 33 ft)
Last Update:
7:17 pm EST Feb 16, 2026
Forecast Valid:
9pm EST Feb 16, 2026-6pm EST Feb 23, 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