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

52°F

11°C

Humidity 70%
Wind Speed Calm
Barometer 30.42 in (1030.4 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 11 Oct 9:55 am EDT
Extended Forecast for

Portsmouth NH

  • Today

    Today: A 40 percent chance of rain after noon. Mostly cloudy, with a high near 61. South wind 5 to 10 mph.

    High: 61 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tonight

    Tonight: Showers, mainly before 5am. Areas of dense fog after 2am. Low around 47. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 47 °F

    Showers and
    Areas Dense
    Fog

  • Columbus Day

    Columbus Day: A 30 percent chance of showers, mainly between 7am and 8am. Areas of fog before 8am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 69. North wind around 5 mph becoming calm. New precipitation amounts of less than a tenth of an inch possible.

    High: 69 °F

    Chance
    Showers and
    Areas Fog
    then Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 47. Light and variable wind becoming northeast 5 to 10 mph after midnight.

    Low: 47 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Rain likely, mainly after 4pm. Cloudy, with a high near 61. East wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 61 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain, mainly before 2am, then showers likely after 2am. Low around 53. Chance of precipitation is 80%.

    Low: 53 °F

    Rain

  • Wednesday

    Wednesday: Showers likely, mainly before 7am. Mostly sunny, with a high near 67. Chance of precipitation is 60%.

    High: 67 °F

    Showers
    Likely then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

Detailed Forecast

Today
A 40 percent chance of rain after noon. Mostly cloudy, with a high near 61. South wind 5 to 10 mph.
Tonight
Showers, mainly before 5am. Areas of dense fog after 2am. Low around 47. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Columbus Day
A 30 percent chance of showers, mainly between 7am and 8am. Areas of fog before 8am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 69. North wind around 5 mph becoming calm. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Increasing clouds, with a low around 47. Light and variable wind becoming northeast 5 to 10 mph after midnight.
Tuesday
Rain likely, mainly after 4pm. Cloudy, with a high near 61. East wind 5 to 10 mph. Chance of precipitation is 60%.
Tuesday Night
Rain, mainly before 2am, then showers likely after 2am. Low around 53. Chance of precipitation is 80%.
Wednesday
Showers likely, mainly before 7am. Mostly sunny, with a high near 67. Chance of precipitation is 60%.
Wednesday Night
Mostly clear, with a low around 42.
Thursday
Sunny, with a high near 60.
Thursday Night
Partly cloudy, with a low around 40.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 61.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 44.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.05°N 70.78°W (Elev. 49 ft)
Last Update:
7:59 am EDT Oct 11, 2026
Forecast Valid:
10am EDT Oct 11, 2026-6pm EDT Oct 17, 2026
 
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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