National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Pease Air Force Base / Portsmouth (KPSM)

Lat: 43.08°NLon: 70.82°WElev: 102ft.

Partly Cloudy

69°F

21°C

Humidity 92%
Wind Speed Calm
Barometer 30.01 in (1016.4 mb)
Dewpoint 66°F (19°C)
Visibility 8.00 mi
Last update 23 Jun 4:55 am EDT
Extended Forecast for

Portsmouth NH

Extreme Heat Watch June 24, 11:00am until June 24, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch

  • Today

    Today: Mostly sunny, with a high near 84. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 69. South wind around 5 mph becoming southwest after midnight.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 96. Heat index values as high as 99. West wind around 5 mph.

    High: 96 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 72. West wind around 5 mph.

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 85. North wind around 5 mph becoming southeast in the afternoon.

    High: 85 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers. Mostly cloudy, with a high near 71.

    High: 71 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers. Mostly cloudy, with a high near 69.

    High: 69 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 84. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.
Tonight
Mostly clear, with a low around 69. South wind around 5 mph becoming southwest after midnight.
Tuesday
Sunny and hot, with a high near 96. Heat index values as high as 99. West wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 72. West wind around 5 mph.
Wednesday
Mostly sunny, with a high near 85. North wind around 5 mph becoming southeast in the afternoon.
Wednesday Night
A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 62.
Thursday
A 30 percent chance of showers. Mostly cloudy, with a high near 71.
Thursday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 58.
Friday
A 30 percent chance of showers. Mostly cloudy, with a high near 69.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 59.
Saturday
A 50 percent chance of showers. Mostly cloudy, with a high near 73.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 60.
Sunday
Partly sunny, with a high near 76.
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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:
3:09 am EDT Jun 23, 2025
Forecast Valid:
5am EDT Jun 23, 2025-6pm EDT Jun 29, 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