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.

Overcast

75°F

24°C

Humidity 90%
Wind Speed Calm
Barometer 30.04 in (1016.9 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 14 Jul 11:56 pm EDT
Extended Forecast for

Nashua NH

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

  • Overnight

    Overnight: A 30 percent chance of showers, mainly before 2am. Patchy fog after 2am. Otherwise, cloudy, with a low around 70. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

    Low: 70 °F

    Chance
    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: A 20 percent chance of showers after 2pm. Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny and hot, with a high near 91. Heat index values as high as 96. Calm wind.

    High: 91 °F

    Patchy Fog
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 69. Calm wind.

    Low: 69 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 7am. Otherwise, mostly sunny and hot, with a high near 93. Heat index values as high as 99. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 93 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 72. South wind around 5 mph becoming calm in the evening.

    Low: 72 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 11am, then a chance of showers and thunderstorms after 11am. Patchy fog before 7am. Otherwise, partly sunny and hot, with a high near 91. Chance of precipitation is 50%.

    High: 91 °F

    Chance
    Showers and
    Patchy Fog
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Scattered thunderstorms before 8pm. Partly cloudy, with a low around 73. Chance of precipitation is 30%.

    Low: 73 °F

    Scattered
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of showers, mainly before 2am. Patchy fog after 2am. Otherwise, cloudy, with a low around 70. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A 20 percent chance of showers after 2pm. Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny and hot, with a high near 91. Heat index values as high as 96. Calm wind.
Tuesday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 69. Calm wind.
Wednesday
Patchy fog before 7am. Otherwise, mostly sunny and hot, with a high near 93. Heat index values as high as 99. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 72. South wind around 5 mph becoming calm in the evening.
Thursday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 11am, then a chance of showers and thunderstorms after 11am. Patchy fog before 7am. Otherwise, partly sunny and hot, with a high near 91. Chance of precipitation is 50%.
Thursday Night
Scattered thunderstorms before 8pm. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Nashua NH
 42.74°N 71.46°W (Elev. 167 ft)
Last Update:
7:55 pm EDT Jul 14, 2025
Forecast Valid:
12am EDT Jul 15, 2025-6pm EDT Jul 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