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

Lawrence Municipal Airport (KLWM)

Lat: 42.71°NLon: 71.13°WElev: 135ft.

Fair

71°F

22°C

Humidity 84%
Wind Speed Calm
Barometer 30.11 in (1019.4 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 13 Jul 10:54 pm EDT
Extended Forecast for

Merrimac MA

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, cloudy, with a low around 65. South wind 3 to 5 mph.

    Low: 65 °F

    Patchy Fog

  • Monday

    Monday: A chance of showers and thunderstorms, mainly after 3pm. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 85. South wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 85 °F

    Patchy Fog
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers. Mostly cloudy, with a low around 69. Light southwest wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers before 9am. Mostly cloudy, then gradually becoming sunny, with a high near 88. Light and variable wind. Chance of precipitation is 20%.

    High: 88 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69. Light southwest wind.

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 91. Calm wind becoming south around 5 mph in the afternoon.

    High: 91 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 72. Southwest wind around 5 mph.

    Low: 72 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms after 3pm. Partly sunny and hot, with a high near 91. Southwest wind 5 to 7 mph. Chance of precipitation is 30%.

    High: 91 °F

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. Southwest wind around 6 mph. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, cloudy, with a low around 65. South wind 3 to 5 mph.
Monday
A chance of showers and thunderstorms, mainly after 3pm. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 85. South wind 3 to 6 mph. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers. Mostly cloudy, with a low around 69. Light southwest wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A slight chance of showers before 9am. Mostly cloudy, then gradually becoming sunny, with a high near 88. Light and variable wind. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 69. Light southwest wind.
Wednesday
Sunny and hot, with a high near 91. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 72. Southwest wind around 5 mph.
Thursday
A chance of showers and thunderstorms after 3pm. Partly sunny and hot, with a high near 91. Southwest wind 5 to 7 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. Southwest wind around 6 mph. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. West wind 5 to 7 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Light west wind. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 81. North wind around 6 mph becoming southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 64. Light and variable wind.
Sunday
Partly sunny, with a high near 81. Light and variable wind becoming northeast around 5 mph in the morning.
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ABOUT THIS FORECAST

 
Point Forecast:
Merrimac MA
 42.84°N 71.01°W (Elev. 135 ft)
Last Update:
6:05 pm EDT Jul 13, 2025
Forecast Valid:
11pm EDT Jul 13, 2025-6pm EDT Jul 20, 2025
 
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