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

71°F

22°C

Humidity 28%
Wind Speed S 6 mph
Barometer 29.89 in (1012.4 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 10 Mar 1:55 pm EDT
Extended Forecast for

Portsmouth NH

  • This Afternoon

    This Afternoon: Sunny, with a high near 71. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 71 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 37. Calm wind becoming northeast around 5 mph after midnight.

    Low: 37 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of rain, mainly between 11am and noon. Patchy fog before 2pm, then patchy fog after 3pm. Otherwise, mostly cloudy, with a high near 40. Northeast wind 5 to 10 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 40 °F

    Chance Rain
    and Patchy
    Fog

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Areas of dense fog. Otherwise, cloudy, with a low around 37. East wind 5 to 10 mph becoming south after midnight.

    Low: 37 °F

    Chance Rain
    and Areas
    Dense Fog

  • Thursday

    Thursday: A 40 percent chance of rain before 5pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 52. West wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 52 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Rain and snow likely before 2am, then a chance of rain. Mostly cloudy, with a low around 30. Chance of precipitation is 60%.

    Low: 30 °F

    Rain/Snow
    Likely

  • Saturday

    Saturday: A 30 percent chance of rain before 9am. Mostly sunny, with a high near 46.

    High: 46 °F

    Chance Rain
    then Partly
    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 71. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 37. Calm wind becoming northeast around 5 mph after midnight.
Wednesday
A 30 percent chance of rain, mainly between 11am and noon. Patchy fog before 2pm, then patchy fog after 3pm. Otherwise, mostly cloudy, with a high near 40. Northeast wind 5 to 10 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 50 percent chance of rain. Areas of dense fog. Otherwise, cloudy, with a low around 37. East wind 5 to 10 mph becoming south after midnight.
Thursday
A 40 percent chance of rain before 5pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 52. West wind 10 to 15 mph, with gusts as high as 30 mph.
Thursday Night
Partly cloudy, with a low around 25.
Friday
Mostly sunny, with a high near 43.
Friday Night
Rain and snow likely before 2am, then a chance of rain. Mostly cloudy, with a low around 30. Chance of precipitation is 60%.
Saturday
A 30 percent chance of rain before 9am. Mostly sunny, with a high near 46.
Saturday Night
Partly cloudy, with a low around 26.
Sunday
A 30 percent chance of snow. Mostly cloudy, with a high near 45.
Sunday Night
Rain and snow likely. Cloudy, with a low around 34. Chance of precipitation is 60%.
Monday
Rain. High near 55. Chance of precipitation is 90%.
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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:
2:44 pm EDT Mar 10, 2026
Forecast Valid:
2pm EDT Mar 10, 2026-6pm EDT Mar 16, 2026
 
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Additional Resources

Radar & Satellite Image

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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