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.

A Few Clouds

35°F

2°C

Humidity 54%
Wind Speed W 10 mph
Barometer 30.24 in (1024.4 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 15 Mar 12:55 am EDT
Extended Forecast for

Portsmouth NH

  • Overnight

    Overnight: Partly cloudy, with a low around 24. West wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 24 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 37. Northwest wind 5 to 10 mph becoming southeast in the morning. Winds could gust as high as 20 mph.

    High: 37 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of rain, mainly after 5am. Increasing clouds, with a low around 33. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 33 °F

    Mostly Cloudy
    then Chance
    Rain

  • Monday

    Monday: Rain, mainly after 7am. High near 54. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.

    High: 54 °F

    Rain

  • Monday Night

    Monday Night: Rain. Low around 38. Breezy, with a south wind 15 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 100%.

    Low: 38 °F

    Rain and
    Breezy

  • Tuesday

    Tuesday: A 30 percent chance of showers before 8am. Mostly sunny, with a high near 45.

    High: 45 °F

    Chance
    Showers then
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 18.

    Low: 18 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 37.

    High: 37 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 24. West wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
Partly sunny, with a high near 37. Northwest wind 5 to 10 mph becoming southeast in the morning. Winds could gust as high as 20 mph.
Sunday Night
A 30 percent chance of rain, mainly after 5am. Increasing clouds, with a low around 33. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain, mainly after 7am. High near 54. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.
Monday Night
Rain. Low around 38. Breezy, with a south wind 15 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 100%.
Tuesday
A 30 percent chance of showers before 8am. Mostly sunny, with a high near 45.
Tuesday Night
Mostly clear, with a low around 18.
Wednesday
Sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 24.
Thursday
Partly sunny, with a high near 43.
Thursday Night
Mostly cloudy, with a low around 28.
Friday
Mostly sunny, with a high near 45.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 25.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 40. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.07°N 70.78°W (Elev. 33 ft)
Last Update:
1:10 am EDT Mar 15, 2026
Forecast Valid:
1am EDT Mar 15, 2026-6pm EDT Mar 21, 2026
 
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Additional Resources

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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