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

Hazardous Weather Conditions

Current conditions at

Nashua - Boire Field Airport (KASH)

Lat: 42.78°NLon: 71.51°WElev: 180ft.

Fair

82°F

28°C

Humidity 69%
Wind Speed NW 6 mph
Barometer 30.07 in (1018.0 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 15 Jul 9:56 am EDT
Extended Forecast for

Windham NH

Heat Advisory July 15, 11:00am until July 15, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Mostly sunny, with a high near 89. Calm wind becoming southwest around 5 mph.

    High: 89 °F

    Mostly Sunny

  • Tonight

    Tonight: Widespread haze before 10pm. Patchy fog after 1am. Otherwise, mostly clear, with a low around 69. Southwest wind around 5 mph becoming calm.

    Low: 69 °F

    Haze then
    Patchy Fog

  • Wednesday

    Wednesday: Sunny and hot, with a high near 92. Heat index values as high as 97. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 92 °F

    Hot

  • Wednesday Night

    Wednesday Night: Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 72. Southwest wind around 5 mph.

    Low: 72 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: A chance of showers between 8am and 11am, then a chance of showers and thunderstorms after 11am. Patchy fog before 9am. Otherwise, partly sunny and hot, with a high near 90. Southwest wind around 5 mph. Chance of precipitation is 50%.

    High: 90 °F

    Chance
    Showers and
    Patchy Fog
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Scattered thunderstorms before 8pm. Partly cloudy, with a low around 72. Chance of precipitation is 30%.

    Low: 72 °F

    Scattered
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 89. Calm wind becoming southwest around 5 mph.
Tonight
Widespread haze before 10pm. Patchy fog after 1am. Otherwise, mostly clear, with a low around 69. Southwest wind around 5 mph becoming calm.
Wednesday
Sunny and hot, with a high near 92. Heat index values as high as 97. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 72. Southwest wind around 5 mph.
Thursday
A chance of showers between 8am and 11am, then a chance of showers and thunderstorms after 11am. Patchy fog before 9am. Otherwise, partly sunny and hot, with a high near 90. Southwest wind around 5 mph. Chance of precipitation is 50%.
Thursday Night
Scattered thunderstorms before 8pm. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 85.
Friday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 62.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 82.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Windham NH
 42.79°N 71.3°W (Elev. 194 ft)
Last Update:
8:18 am EDT Jul 15, 2025
Forecast Valid:
10am EDT Jul 15, 2025-6pm EDT Jul 21, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation