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 71%
Wind Speed S 5 mph
Barometer 30.11 in (1019.3 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 4 Aug 10:54 pm EDT
Extended Forecast for

Merrimac MA

  • Tonight

    Tonight: Partly cloudy, with a low around 60. Light southwest wind.

    Low: 60 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 85. Light west wind.

    High: 85 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 67. Light southwest wind.

    Low: 67 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly after 5pm. Increasing clouds, with a high near 89. Heat index values as high as 97. Southwest wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 89 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 70. Light southwest wind. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 89. West wind 3 to 5 mph. Chance of precipitation is 30%.

    High: 89 °F

    Sunny then
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before 9pm. Partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 30%.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 9pm. Partly cloudy, with a low around 69. West wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 60. Light southwest wind.
Wednesday
Partly sunny, with a high near 85. Light west wind.
Wednesday Night
Partly cloudy, with a low around 67. Light southwest wind.
Thursday
A chance of showers and thunderstorms, mainly after 5pm. Increasing clouds, with a high near 89. Heat index values as high as 97. Southwest wind 3 to 6 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 70. Light southwest wind. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 89. West wind 3 to 5 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers before 9pm. Partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 9pm. Partly cloudy, with a low around 69. West wind 3 to 5 mph. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 88. West wind 3 to 8 mph.
Sunday Night
Mostly clear, with a low around 68. West wind 3 to 5 mph.
Monday
Sunny, with a high near 88. Light west wind increasing to 5 to 9 mph in the morning.
Monday Night
Partly cloudy, with a low around 66. West wind 3 to 6 mph.
Tuesday
A chance of showers. Partly sunny, with a high near 84. West wind 5 to 8 mph. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Merrimac MA
 42.81°N 70.99°W (Elev. 151 ft)
Last Update:
7:03 pm EDT Aug 4, 2026
Forecast Valid:
11pm EDT Aug 4, 2026-6pm EDT Aug 11, 2026
 
Forecast Discussion
 
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Additional Resources

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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