National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Pease Air Force Base / Portsmouth (KPSM)

Lat: 43.08°NLon: 70.82°WElev: 102ft.

A Few Clouds

85°F

29°C

Humidity 30%
Wind Speed SW 10 mph
Barometer 30.14 in (1020.8 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 6 Oct 3:55 pm EDT
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Mostly clear, with a low around 56. Southwest wind around 5 mph.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers between 9pm and 2am, then rain likely after 2am. Increasing clouds, with a low around 55. Southwest wind around 10 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Slight Chance
    Showers then
    Rain Likely

  • Wednesday

    Wednesday: Rain, mainly before 2pm, then a chance of showers after 2pm. High near 68. Southwest wind around 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.

    High: 68 °F

    Rain

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 40. Northwest wind 5 to 10 mph.

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Thursday Night

    Thursday Night: Patchy frost after 5am. Otherwise, clear, with a low around 37.

    Low: 37 °F

    Clear then
    Patchy Frost

  • Friday

    Friday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 56. Southwest wind around 5 mph.
Tuesday
Mostly sunny, with a high near 80. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
A chance of showers between 9pm and 2am, then rain likely after 2am. Increasing clouds, with a low around 55. Southwest wind around 10 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Rain, mainly before 2pm, then a chance of showers after 2pm. High near 68. Southwest wind around 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Wednesday Night
Mostly clear, with a low around 40. Northwest wind 5 to 10 mph.
Thursday
Sunny, with a high near 60.
Thursday Night
Patchy frost after 5am. Otherwise, clear, with a low around 37.
Friday
Sunny, with a high near 64.
Friday Night
Mostly clear, with a low around 41.
Saturday
Mostly sunny, with a high near 66.
Saturday Night
Mostly cloudy, with a low around 46.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 62.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 48.
Columbus Day
A 30 percent chance of showers. Partly sunny, with a high near 63.
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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:
1:20 pm EDT Oct 6, 2025
Forecast Valid:
3pm EDT Oct 6, 2025-6pm EDT Oct 13, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation