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.

Mostly Cloudy

28°F

-2°C

Humidity 56%
Wind Speed S 7 mph
Barometer 30.35 in (1029.8 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 19 Mar 1:53 am EDT
Extended Forecast for

Merrimack NH

  • Overnight

    Overnight: Partly cloudy, with a low around 21. Calm wind.

    Low: 21 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 44. Calm wind becoming south around 5 mph in the afternoon.

    High: 44 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 26. Calm wind.

    Low: 26 °F

    Decreasing
    Clouds

  • Friday

    Friday: Increasing clouds, with a high near 54. Calm wind becoming south around 5 mph in the afternoon.

    High: 54 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Rain likely, mainly between 10pm and 5am. Mostly cloudy, with a low around 37. South wind around 5 mph. Chance of precipitation is 70%.

    Low: 37 °F

    Rain Likely

  • Saturday

    Saturday: A 30 percent chance of rain before 8am. Partly sunny, with a high near 56.

    High: 56 °F

    Chance Rain
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 40 percent chance of rain after 9am. Mostly cloudy, with a high near 53.

    High: 53 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A chance of rain before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 50%.

    Low: 29 °F

    Chance
    Rain/Snow

Detailed Forecast

Overnight
Partly cloudy, with a low around 21. Calm wind.
Thursday
Mostly sunny, with a high near 44. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 26. Calm wind.
Friday
Increasing clouds, with a high near 54. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
Rain likely, mainly between 10pm and 5am. Mostly cloudy, with a low around 37. South wind around 5 mph. Chance of precipitation is 70%.
Saturday
A 30 percent chance of rain before 8am. Partly sunny, with a high near 56.
Saturday Night
Mostly cloudy, with a low around 34.
Sunday
A 40 percent chance of rain after 9am. Mostly cloudy, with a high near 53.
Sunday Night
A chance of rain before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 50%.
Monday
A chance of rain and snow before 11am, then a chance of snow between 11am and 4pm. Mostly cloudy, with a high near 42. Chance of precipitation is 40%.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Mostly sunny, with a high near 42.
Tuesday Night
Partly cloudy, with a low around 23.
Wednesday
Mostly sunny, with a high near 46.
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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:
2:26 am EDT Mar 19, 2026
Forecast Valid:
2am EDT Mar 19, 2026-6pm EDT Mar 25, 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