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Hazardous Weather Conditions

Current conditions at

Manchester Airport (KMHT)

Lat: 42.93°NLon: 71.44°WElev: 223ft.

Overcast

71°F

22°C

Humidity 87%
Wind Speed S 6 mph
Barometer 30.05 in (1018.4 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 14 Jul 3:53 am EDT
Extended Forecast for

Merrimack NH

  • Today

    Today: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 85. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Patchy Fog
    then Showers
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 70. South wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 91. Heat index values as high as 96. Calm wind.

    High: 91 °F

    Hot

  • Tuesday Night

    Tuesday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, sunny and hot, with a high near 93. Calm wind becoming southwest around 5 mph.

    High: 93 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms. Patchy fog before 7am. Otherwise, partly sunny and hot, with a high near 91.

    High: 91 °F

    Chance
    T-storms and
    Patchy Fog

  • Thursday Night

    Thursday Night: Patchy fog before 4am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 72.

    Low: 72 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms after 2pm. Patchy fog before 7am. Otherwise, mostly sunny, with a high near 89.

    High: 89 °F

    Patchy Fog
    then Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 85. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 70. South wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Mostly sunny and hot, with a high near 91. Heat index values as high as 96. Calm wind.
Tuesday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 68. Calm wind.
Wednesday
Patchy fog before 8am. Otherwise, sunny and hot, with a high near 93. Calm wind becoming southwest around 5 mph.
Wednesday Night
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 71.
Thursday
A 40 percent chance of showers and thunderstorms. Patchy fog before 7am. Otherwise, partly sunny and hot, with a high near 91.
Thursday Night
Patchy fog before 4am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 72.
Friday
A 50 percent chance of showers and thunderstorms after 2pm. Patchy fog before 7am. Otherwise, mostly sunny, with a high near 89.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 66.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
Partly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
Merrimack NH
 42.86°N 71.49°W (Elev. 118 ft)
Last Update:
2:03 am EDT Jul 14, 2025
Forecast Valid:
4am EDT Jul 14, 2025-6pm EDT Jul 20, 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