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.

Overcast

69°F

21°C

Humidity 81%
Wind Speed S 5 mph
Barometer 29.85 in (1010.7 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 5 Nov 5:56 pm EST
Extended Forecast for

Merrimack NH

  • Tonight

    Tonight: A chance of showers before 4am, then a slight chance of showers after 5am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 59. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 59 °F

    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: Showers likely, mainly after 2pm. Patchy fog before 11am. Otherwise, cloudy, with a high near 70. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 70 °F

    Showers
    Likely and
    Patchy Fog

  • Friday Night

    Friday Night: Showers. Patchy fog before 3am. Low around 52. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 52 °F

    Showers and
    Patchy Fog

  • Saturday

    Saturday: Showers likely, mainly after 1pm. Cloudy, with a high near 61. Calm wind becoming northeast around 5 mph. Chance of precipitation is 60%.

    High: 61 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers. Low around 41. Calm wind becoming north around 5 mph. Chance of precipitation is 80%.

    Low: 41 °F

    Chance
    Showers then
    Showers

  • Sunday

    Sunday: Showers likely before 7am. Partly sunny, with a high near 57. Chance of precipitation is 60%.

    High: 57 °F

    Showers
    Likely then
    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers before 4am, then a slight chance of showers after 5am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 59. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers likely, mainly after 2pm. Patchy fog before 11am. Otherwise, cloudy, with a high near 70. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Showers. Patchy fog before 3am. Low around 52. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Showers likely, mainly after 1pm. Cloudy, with a high near 61. Calm wind becoming northeast around 5 mph. Chance of precipitation is 60%.
Saturday Night
Showers. Low around 41. Calm wind becoming north around 5 mph. Chance of precipitation is 80%.
Sunday
Showers likely before 7am. Partly sunny, with a high near 57. Chance of precipitation is 60%.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Mostly sunny, with a high near 56.
Monday Night
Mostly clear, with a low around 33.
Tuesday
Mostly sunny, with a high near 62.
Tuesday Night
Mostly clear, with a low around 36.
Veterans Day
Mostly sunny, with a high near 57.
Wednesday Night
Partly cloudy, with a low around 26.
Thursday
Mostly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Merrimack NH
 42.86°N 71.52°W (Elev. 207 ft)
Last Update:
3:43 pm EST Nov 5, 2026
Forecast Valid:
6pm EST Nov 5, 2026-6pm EST Nov 12, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation