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

Manchester Airport (KMHT)

Lat: 42.93°NLon: 71.44°WElev: 223ft.

Patches Fog Fog/Mist

29°F

-2°C

Humidity 96%
Wind Speed Calm
Barometer 29.69 in (1007.2 mb)
Dewpoint 28°F (-2°C)
Visibility 3.00 mi
Last update 14 Mar 5:53 am EDT
Extended Forecast for

Merrimack NH

  • Today

    Today: Mostly sunny, with a high near 46. Breezy, with a west wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 46 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 25. Breezy, with a west wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.

    Low: 25 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny through mid morning, then becoming mostly cloudy, with a high near 45. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.

    High: 45 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 40 percent chance of rain after 2am. Mostly cloudy, with a low around 30. Southeast wind around 5 mph.

    Low: 30 °F

    Mostly Cloudy
    then Chance
    Rain

  • Monday

    Monday: Rain. High near 61. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.

    High: 61 °F

    Rain

  • Monday Night

    Monday Night: Rain. Low around 37. Chance of precipitation is 100%.

    Low: 37 °F

    Rain

  • Tuesday

    Tuesday: Rain likely before 8am. Partly sunny, with a high near 48. Chance of precipitation is 60%.

    High: 48 °F

    Rain Likely
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 39.

    High: 39 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 46. Breezy, with a west wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.
Tonight
Mostly clear, with a low around 25. Breezy, with a west wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Sunday
Sunny through mid morning, then becoming mostly cloudy, with a high near 45. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.
Sunday Night
A 40 percent chance of rain after 2am. Mostly cloudy, with a low around 30. Southeast wind around 5 mph.
Monday
Rain. High near 61. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.
Monday Night
Rain. Low around 37. Chance of precipitation is 100%.
Tuesday
Rain likely before 8am. Partly sunny, with a high near 48. Chance of precipitation is 60%.
Tuesday Night
Partly cloudy, with a low around 18.
Wednesday
Sunny, with a high near 39.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
Partly sunny, with a high near 46.
Thursday Night
Partly cloudy, with a low around 27.
Friday
Mostly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Merrimack NH
 42.86°N 71.49°W (Elev. 118 ft)
Last Update:
2:06 am EDT Mar 14, 2026
Forecast Valid:
6am EDT Mar 14, 2026-6pm EDT Mar 20, 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