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

36°F

2°C

Humidity 70%
Wind Speed S 6 mph
Barometer 30.22 in (1023.7 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 22 Apr 12:55 am EDT
Extended Forecast for

Portsmouth NH

  • Overnight

    Overnight: Mostly cloudy, with a low around 34. South wind around 5 mph.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of rain and snow showers before 9am, then scattered rain showers. Mostly cloudy, with a high near 45. South wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Scattered
    Rain/Snow
    then
    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 38. South wind around 5 mph becoming calm. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 55. Northwest wind 5 to 10 mph.

    High: 55 °F

    Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33. Northwest wind around 5 mph.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 36 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 34. South wind around 5 mph.
Wednesday
A slight chance of rain and snow showers before 9am, then scattered rain showers. Mostly cloudy, with a high near 45. South wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 38. South wind around 5 mph becoming calm. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A 30 percent chance of showers before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 55. Northwest wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 33. Northwest wind around 5 mph.
Friday
Mostly sunny, with a high near 51.
Friday Night
Partly cloudy, with a low around 33.
Saturday
Mostly sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 36.
Sunday
Mostly sunny, with a high near 54.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Partly sunny, with a high near 54.
Monday Night
Mostly cloudy, with a low around 40.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.07°N 70.78°W (Elev. 33 ft)
Last Update:
8:19 pm EDT Apr 21, 2026
Forecast Valid:
1am EDT Apr 22, 2026-6pm EDT Apr 28, 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