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.

Fair

49°F

9°C

Humidity 67%
Wind Speed NW 9 mph
Barometer 29.94 in (1014.2 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 17 Oct 8:55 am EDT
Extended Forecast for

Portsmouth NH

  • Today

    Today: Sunny, with a high near 63. North wind around 10 mph, with gusts as high as 20 mph.

    High: 63 °F

    Sunny

  • Tonight

    Tonight: Patchy frost after 5am. Otherwise, clear, with a low around 36. North wind around 5 mph.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost

  • Saturday

    Saturday: Patchy frost before 8am. Otherwise, sunny, with a high near 64. Northwest wind around 5 mph becoming calm.

    High: 64 °F

    Patchy Frost
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 67. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 67 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers likely, mainly after 4am. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.

    Low: 51 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: Rain likely, mainly before 4pm. Mostly cloudy, with a high near 64. Chance of precipitation is 70%.

    High: 64 °F

    Rain Likely

  • Monday Night

    Monday Night: A chance of rain before 8pm, then a chance of showers after 8pm. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.

    Low: 47 °F

    Chance Rain

  • Tuesday

    Tuesday: A 30 percent chance of showers. Partly sunny, with a high near 67.

    High: 67 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 63. North wind around 10 mph, with gusts as high as 20 mph.
Tonight
Patchy frost after 5am. Otherwise, clear, with a low around 36. North wind around 5 mph.
Saturday
Patchy frost before 8am. Otherwise, sunny, with a high near 64. Northwest wind around 5 mph becoming calm.
Saturday Night
Mostly clear, with a low around 44. Calm wind.
Sunday
Mostly sunny, with a high near 67. South wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Showers likely, mainly after 4am. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Monday
Rain likely, mainly before 4pm. Mostly cloudy, with a high near 64. Chance of precipitation is 70%.
Monday Night
A chance of rain before 8pm, then a chance of showers after 8pm. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 67.
Tuesday Night
Showers likely, mainly after 5am. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of showers. Partly sunny, with a high near 64.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 43.
Thursday
Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.07°N 70.78°W (Elev. 33 ft)
Last Update:
6:28 am EDT Oct 17, 2025
Forecast Valid:
9am EDT Oct 17, 2025-6pm EDT Oct 23, 2025
 
Forecast Discussion
 
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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