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.

Overcast

78°F

26°C

Humidity 52%
Wind Speed SW 9 mph
Barometer 29.96 in (1014.8 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 30 Aug 6:55 pm EDT
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: A slight chance of showers between 8pm and 9pm. Patchy fog after 3am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 59. West wind around 5 mph. Chance of precipitation is 20%.

    Low: 59 °F

    Slight Chance
    Showers then
    Patchy Fog

  • Monday

    Monday: Patchy fog before 8am. Otherwise, sunny, with a high near 76. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 76 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: A 50 percent chance of showers after 1am. Patchy fog after 1am. Otherwise, increasing clouds, with a low around 60. South wind around 5 mph becoming calm in the evening. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 60 °F

    Mostly Cloudy
    then Chance
    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: Showers, mainly after 9am. Patchy fog before 9am. High near 72. East wind 5 to 10 mph. Chance of precipitation is 80%.

    High: 72 °F

    Showers and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Showers, mainly before 1am. Low around 59. East wind around 5 mph. Chance of precipitation is 80%.

    Low: 59 °F

    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers. Mostly cloudy, with a high near 72.

    High: 72 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.

    Low: 61 °F

    Showers
    Likely

  • Thursday

    Thursday: A 50 percent chance of showers. Mostly cloudy, with a high near 76.

    High: 76 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers before 3am. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers between 8pm and 9pm. Patchy fog after 3am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 59. West wind around 5 mph. Chance of precipitation is 20%.
Monday
Patchy fog before 8am. Otherwise, sunny, with a high near 76. Calm wind becoming southeast around 5 mph in the afternoon.
Monday Night
A 50 percent chance of showers after 1am. Patchy fog after 1am. Otherwise, increasing clouds, with a low around 60. South wind around 5 mph becoming calm in the evening. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Showers, mainly after 9am. Patchy fog before 9am. High near 72. East wind 5 to 10 mph. Chance of precipitation is 80%.
Tuesday Night
Showers, mainly before 1am. Low around 59. East wind around 5 mph. Chance of precipitation is 80%.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 72.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 76.
Thursday Night
A 40 percent chance of showers before 3am. Mostly cloudy, with a low around 61.
Friday
Partly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 58.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Mostly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.03°N 70.79°W (Elev. 59 ft)
Last Update:
2:26 pm EDT Aug 30, 2026
Forecast Valid:
7pm EDT Aug 30, 2026-6pm EDT Sep 6, 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