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Hazardous Weather Conditions

Current conditions at

Nashua - Boire Field Airport (KASH)

Lat: 42.78°NLon: 71.51°WElev: 180ft.

Mostly Cloudy

30°C

86°F

Humidity 63%
Wind Speed Vrbl 9 km/h
Barometer 30.01 in
Dewpoint 22°C (72°F)
Visibility 16 km
Heat Index33°C (92°F)
Last update 14 Jul 2:56 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

  • This Afternoon

    This Afternoon: Scattered showers and thunderstorms. Mostly cloudy, with a high near 29. Southwest wind around 10 km/h. Chance of precipitation is 30%. New rainfall amounts between 2.5 and 5 mm possible.

    High: 29 °C

    Scattered
    T-storms

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 7pm, then scattered showers and thunderstorms between 7pm and 11pm, then isolated showers after 11pm. Mostly cloudy, with a low around 22. Calm wind. Chance of precipitation is 60%. New precipitation amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.

    Low: 22 °C

    Showers
    Likely then
    Isolated
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers after 2pm. Mostly cloudy, then gradually becoming sunny and hot, with a high near 33. Heat index values as high as 36. Calm wind.

    High: 33 °C

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 21. Calm wind.

    Low: 21 °C

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 7am. Otherwise, mostly sunny and hot, with a high near 34. Calm wind becoming southwest 5 to 10 km/h in the afternoon.

    High: 34 °C

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 22.

    Low: 22 °C

    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 33. Chance of precipitation is 50%.

    High: 33 °C

    Chance
    Showers and
    Patchy Fog
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Scattered thunderstorms before 8pm. Partly cloudy, with a low around 23. Chance of precipitation is 30%.

    Low: 23 °C

    Scattered
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 32.

    High: 32 °C

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Mostly cloudy, with a high near 29. Southwest wind around 10 km/h. Chance of precipitation is 30%. New rainfall amounts between 2.5 and 5 mm possible.
Tonight
Showers likely and possibly a thunderstorm before 7pm, then scattered showers and thunderstorms between 7pm and 11pm, then isolated showers after 11pm. Mostly cloudy, with a low around 22. Calm wind. Chance of precipitation is 60%. New precipitation amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
Tuesday
A 20 percent chance of showers after 2pm. Mostly cloudy, then gradually becoming sunny and hot, with a high near 33. Heat index values as high as 36. Calm wind.
Tuesday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 21. Calm wind.
Wednesday
Patchy fog before 7am. Otherwise, mostly sunny and hot, with a high near 34. Calm wind becoming southwest 5 to 10 km/h in the afternoon.
Wednesday Night
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 22.
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 33. Chance of precipitation is 50%.
Thursday Night
Scattered thunderstorms before 8pm. Partly cloudy, with a low around 23. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 32.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 18.
Saturday
Mostly sunny, with a high near 29.
Saturday Night
Partly cloudy, with a low around 18.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 28.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 18.
Monday
Mostly sunny, with a high near 28.
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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 m)
Last Update:
1:50 pm EDT Jul 14, 2025
Forecast Valid:
3pm EDT Jul 14, 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