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.

Partly Cloudy

92°F

33°C

Humidity 41%
Wind Speed Vrbl 6 mph
Barometer 29.99 in (1015.4 mb)
Dewpoint 65°F (18°C)
Visibility 8.00 mi
Heat Index94°F (34°C)
Last update 15 Jul 4:56 pm EDT
Extended Forecast for

Nashua NH

Heat Advisory July 15, 05:53pm until July 16, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 15, 05:53pm until July 16, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 91 °F

    Isolated
    Showers

  • Tonight

    Tonight: Widespread haze between 7pm and 10pm. Patchy fog after 2am. Otherwise, mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Haze then
    Patchy Fog

  • Wednesday

    Wednesday: Widespread haze. Patchy fog before 7am. Otherwise, sunny and hot, with a high near 94. Heat index values as high as 99. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 94 °F

    Patchy Fog
    then Haze

  • Wednesday Night

    Wednesday Night: Patchy fog after 5am. Otherwise, increasing clouds, with a low around 73. South wind around 5 mph becoming calm in the evening.

    Low: 73 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 2pm. Patchy fog before 7am. Otherwise, partly sunny and hot, with a high near 90. Southwest wind around 5 mph. Chance of precipitation is 60%.

    High: 90 °F

    Showers
    Likely and
    Patchy Fog

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 9pm. Partly cloudy, with a low around 72. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Isolated showers. Mostly sunny and hot, with a high near 91. Heat index values as high as 96. Southwest wind around 5 mph. Chance of precipitation is 20%.
Tonight
Widespread haze between 7pm and 10pm. Patchy fog after 2am. Otherwise, mostly clear, with a low around 68. Calm wind.
Wednesday
Widespread haze. Patchy fog before 7am. Otherwise, sunny and hot, with a high near 94. Heat index values as high as 99. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Patchy fog after 5am. Otherwise, increasing clouds, with a low around 73. South wind around 5 mph becoming calm in the evening.
Thursday
Showers likely, with thunderstorms also possible after 2pm. Patchy fog before 7am. Otherwise, partly sunny and hot, with a high near 90. Southwest wind around 5 mph. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 9pm. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 60.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 84.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 83.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nashua NH
 42.75°N 71.49°W (Elev. 180 ft)
Last Update:
1:48 pm EDT Jul 15, 2025
Forecast Valid:
5pm EDT Jul 15, 2025-6pm EDT Jul 22, 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