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

Nashua - Boire Field Airport (KASH)

Lat: 42.78°NLon: 71.51°WElev: 180ft.

Fair

67°F

19°C

Humidity 97%
Wind Speed Calm
Barometer 29.85 in (1010.8 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 17 Aug 9:56 pm EDT
Extended Forecast for

Amherst NH

  • Tonight

    Tonight: Areas of fog after midnight. Otherwise, mostly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Cloudy
    then Areas
    Fog

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 2pm. Areas of fog before 10am. Otherwise, partly sunny, with a high near 82. Calm wind becoming northeast around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Areas Fog
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers, mainly before 7pm. Areas of fog after 1am. Otherwise, mostly cloudy, with a low around 62. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

    Low: 62 °F

    Chance
    Showers then
    Areas Fog

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon.

    High: 82 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers after 4pm. Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 7pm. Partly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Tonight
Areas of fog after midnight. Otherwise, mostly cloudy, with a low around 64. Calm wind.
Tuesday
A chance of showers, with thunderstorms also possible after 2pm. Areas of fog before 10am. Otherwise, partly sunny, with a high near 82. Calm wind becoming northeast around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A 30 percent chance of showers, mainly before 7pm. Areas of fog after 1am. Otherwise, mostly cloudy, with a low around 62. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 63. Calm wind.
Thursday
A 30 percent chance of showers after 4pm. Mostly sunny, with a high near 82.
Thursday Night
A 30 percent chance of showers before 7pm. Partly cloudy, with a low around 58.
Friday
Sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 58.
Saturday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 79.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 60.
Sunday
Showers likely. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Amherst NH
 42.88°N 71.64°W (Elev. 305 ft)
Last Update:
10:30 pm EDT Aug 17, 2026
Forecast Valid:
10pm EDT Aug 17, 2026-6pm EDT Aug 24, 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