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

55°F

13°C

Humidity 35%
Wind Speed NW 10 mph
Barometer 30.09 in (1019.2 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 12 May 10:55 am EDT
Extended Forecast for

Portsmouth NH

  • Today

    Today: Partly sunny, with a high near 61. West wind 5 to 10 mph.

    High: 61 °F

    Partly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 42. Calm wind.

    Low: 42 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A slight chance of showers before noon, then a slight chance of showers after 3pm. Mostly cloudy, with a high near 59. Light southeast wind becoming south 5 to 10 mph in the afternoon. Chance of precipitation is 20%.

    High: 59 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain after 9pm. Cloudy, with a low around 48. South wind 5 to 10 mph.

    Low: 48 °F

    Chance Rain

  • Thursday

    Thursday: Rain. High near 59. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    High: 59 °F

    Rain

  • Thursday Night

    Thursday Night: Rain. Patchy fog between 9pm and 1am. Low around 45. Chance of precipitation is 100%.

    Low: 45 °F

    Rain and
    Patchy Fog

  • Friday

    Friday: Rain. High near 56. Chance of precipitation is 90%.

    High: 56 °F

    Rain

  • Friday Night

    Friday Night: A chance of rain before 8pm, then a chance of showers between 8pm and 11pm. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.

    Low: 47 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 61. West wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 42. Calm wind.
Wednesday
A slight chance of showers before noon, then a slight chance of showers after 3pm. Mostly cloudy, with a high near 59. Light southeast wind becoming south 5 to 10 mph in the afternoon. Chance of precipitation is 20%.
Wednesday Night
A 50 percent chance of rain after 9pm. Cloudy, with a low around 48. South wind 5 to 10 mph.
Thursday
Rain. High near 59. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Thursday Night
Rain. Patchy fog between 9pm and 1am. Low around 45. Chance of precipitation is 100%.
Friday
Rain. High near 56. Chance of precipitation is 90%.
Friday Night
A chance of rain before 8pm, then a chance of showers between 8pm and 11pm. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 71.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Sunny, with a high near 75.
Sunday Night
Partly cloudy, with a low around 52.
Monday
Mostly sunny, with a high near 73.
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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:
8:41 am EDT May 12, 2026
Forecast Valid:
11am EDT May 12, 2026-6pm EDT May 18, 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