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

66°F

19°C

Humidity 51%
Wind Speed W 9 mph
Barometer 30.13 in (1020.5 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 13 Jun 2:55 pm EDT
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 5am. Increasing clouds, with a low around 55. South wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Showers likely, mainly before 9am. Cloudy, with a high near 61. East wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Showers
    Likely then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 51. Northeast wind around 5 mph.

    Low: 51 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 66. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 66 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 52. Southeast wind around 5 mph becoming calm.

    Low: 52 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly after 5am. Increasing clouds, with a low around 55. South wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Showers likely, mainly before 9am. Cloudy, with a high near 61. East wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Mostly cloudy, with a low around 51. Northeast wind around 5 mph.
Sunday
Partly sunny, with a high near 66. Calm wind becoming southeast around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 52. Southeast wind around 5 mph becoming calm.
Monday
Partly sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Partly sunny, with a high near 73.
Tuesday Night
Mostly cloudy, with a low around 59.
Wednesday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 78.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 63.
Juneteenth
A 40 percent chance of showers. Mostly sunny, with a high near 83.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 64.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 79.
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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:
3:31 pm EDT Jun 13, 2025
Forecast Valid:
4pm EDT Jun 13, 2025-6pm EDT Jun 20, 2025
 
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