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Hazardous Weather Conditions

Current conditions at

Nashua - Boire Field Airport (KASH)

Lat: 42.78°NLon: 71.51°WElev: 180ft.

Fair

67°F

19°C

Humidity 93%
Wind Speed Calm
Barometer 30.10 in (1019.1 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 6 Aug 3:56 am EDT
Extended Forecast for

Nashua NH

Heat Advisory August 6, 11:00am until August 6, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Mostly sunny, with a high near 89. Heat index values as high as 97. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 89 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 11pm. Patchy fog before 1am, then patchy fog after 2am. Otherwise, mostly clear, with a low around 72. Southwest wind around 5 mph becoming calm. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    T-storms then
    Patchy Fog

  • Friday

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

    High: 92 °F

    Hot

  • Friday Night

    Friday Night: Patchy fog after midnight. Otherwise, partly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 90. Light southwest wind increasing to 5 to 10 mph in the afternoon.

    High: 90 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 90.

    High: 90 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 90.

    High: 90 °F

    Hot

Detailed Forecast

Today
Mostly sunny, with a high near 89. Heat index values as high as 97. Calm wind becoming southwest around 5 mph in the afternoon.
Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 11pm. Patchy fog before 1am, then patchy fog after 2am. Otherwise, mostly clear, with a low around 72. Southwest wind around 5 mph becoming calm. Chance of precipitation is 20%.
Friday
Sunny and hot, with a high near 92. Heat index values as high as 97. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 70. Calm wind.
Saturday
A 30 percent chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 90. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Saturday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70.
Sunday
Sunny and hot, with a high near 90.
Sunday Night
Mostly clear, with a low around 67.
Monday
Sunny and hot, with a high near 90.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
A 40 percent chance of showers. Partly sunny, with a high near 87.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nashua NH
 42.75°N 71.52°W (Elev. 187 ft)
Last Update:
2:28 am EDT Aug 6, 2026
Forecast Valid:
4am EDT Aug 6, 2026-6pm EDT Aug 12, 2026
 
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