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

61°F

16°C

Humidity 71%
Wind Speed SE 7 mph
Barometer 30.21 in (1023.3 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 15 Jun 8:55 am EDT
Extended Forecast for

Portsmouth NH

  • Today

    Today: Mostly sunny, with a high near 66. Southeast wind 5 to 10 mph.

    High: 66 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 52. Southeast wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Partly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 69. Light southeast wind increasing to 5 to 10 mph in the morning.

    High: 69 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54. Southeast wind around 5 mph becoming calm.

    Low: 54 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 71. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 71 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers before 8am. Mostly cloudy, with a high near 79.

    High: 79 °F

    Chance
    Showers then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Cloudy

  • Juneteenth

    Juneteenth: A 50 percent chance of showers after 2pm. Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 66. Southeast wind 5 to 10 mph.
Tonight
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 52. Southeast wind around 5 mph becoming calm in the evening.
Monday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 69. Light southeast wind increasing to 5 to 10 mph in the morning.
Monday Night
Partly cloudy, with a low around 54. Southeast wind around 5 mph becoming calm.
Tuesday
Partly sunny, with a high near 71. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 59.
Wednesday
A 30 percent chance of showers before 8am. Mostly cloudy, with a high near 79.
Wednesday Night
Mostly cloudy, with a low around 64.
Juneteenth
A 50 percent chance of showers after 2pm. Partly sunny, with a high near 83.
Thursday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 63.
Friday
Mostly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 59.
Saturday
Mostly sunny, with a high near 77.
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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:
5:44 am EDT Jun 15, 2025
Forecast Valid:
9am EDT Jun 15, 2025-6pm EDT Jun 21, 2025
 
Forecast Discussion
 
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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