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.

Mostly Cloudy

44°F

7°C

Humidity 71%
Wind Speed W 8 mph
Barometer 29.76 in (1008.1 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 5 Apr 11:55 pm EDT
Extended Forecast for

Portsmouth NH

  • Overnight

    Overnight: Partly cloudy, with a low around 35. West wind around 5 mph.

    Low: 35 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 49. West wind around 10 mph, with gusts as high as 20 mph.

    High: 49 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A slight chance of rain showers between 2am and 3am, then a slight chance of snow showers after 3am. Partly cloudy, with a low around 30. West wind around 5 mph becoming calm. Chance of precipitation is 20%.

    Low: 30 °F

    Partly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Tuesday

    Tuesday: Snow showers likely before noon, then a chance of rain showers between noon and 2pm, then a chance of snow showers after 2pm. Partly sunny, with a high near 43. North wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 43 °F

    Snow Showers
    Likely then
    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow showers before 8pm. Mostly clear, with a low around 24. Northwest wind around 5 mph.

    Low: 24 °F

    Chance Snow
    Showers then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 29.

    Low: 29 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Thursday Night

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

    Low: 36 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 35. West wind around 5 mph.
Monday
Mostly sunny, with a high near 49. West wind around 10 mph, with gusts as high as 20 mph.
Monday Night
A slight chance of rain showers between 2am and 3am, then a slight chance of snow showers after 3am. Partly cloudy, with a low around 30. West wind around 5 mph becoming calm. Chance of precipitation is 20%.
Tuesday
Snow showers likely before noon, then a chance of rain showers between noon and 2pm, then a chance of snow showers after 2pm. Partly sunny, with a high near 43. North wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Tuesday Night
A 30 percent chance of snow showers before 8pm. Mostly clear, with a low around 24. Northwest wind around 5 mph.
Wednesday
Sunny, with a high near 46.
Wednesday Night
Clear, with a low around 29.
Thursday
Sunny, with a high near 52.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Partly sunny, with a high near 62.
Friday Night
Mostly cloudy, with a low around 44.
Saturday
Partly sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 39.
Sunday
Partly sunny, with a high near 54.
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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:
9:03 pm EDT Apr 5, 2026
Forecast Valid:
12am EDT Apr 6, 2026-6pm EDT Apr 12, 2026
 
Forecast Discussion
 
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Additional Resources

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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