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.

Light Rain

67°F

19°C

Humidity 97%
Wind Speed Vrbl 5 mph
Barometer 29.85 in (1010.6 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 23 Aug 1:54 pm EDT
Extended Forecast for

Merrimac MA

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. High near 75. East wind around 6 mph. Chance of precipitation is 100%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Areas of dense fog after 2am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 61. Light and variable wind. Chance of precipitation is 30%.

    Low: 61 °F

    Chance
    Showers then
    Areas Dense
    Fog

  • Monday

    Monday: Areas of dense fog before 8am. Otherwise, sunny, with a high near 81. Southwest wind 5 to 9 mph, with gusts as high as 20 mph.

    High: 81 °F

    Areas Dense
    Fog then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59. Southwest wind 3 to 6 mph.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 79. West wind 5 to 8 mph.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58. West wind 3 to 5 mph.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82. West wind around 5 mph.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 83. Calm wind becoming south around 6 mph in the afternoon.

    High: 83 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. High near 75. East wind around 6 mph. Chance of precipitation is 100%. New rainfall amounts of less than a tenth 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 midnight. Areas of dense fog after 2am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 61. Light and variable wind. Chance of precipitation is 30%.
Monday
Areas of dense fog before 8am. Otherwise, sunny, with a high near 81. Southwest wind 5 to 9 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 59. Southwest wind 3 to 6 mph.
Tuesday
Sunny, with a high near 79. West wind 5 to 8 mph.
Tuesday Night
Mostly clear, with a low around 58. West wind 3 to 5 mph.
Wednesday
Sunny, with a high near 82. West wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 59. Calm wind.
Thursday
Mostly sunny, with a high near 83. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
A chance of showers after 9pm. Mostly cloudy, with a low around 63. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Friday
A chance of showers. Partly sunny, with a high near 81. Southeast wind 3 to 5 mph. Chance of precipitation is 40%.
Friday Night
Mostly cloudy, with a low around 63. Calm wind.
Saturday
Mostly sunny, with a high near 82. West wind 3 to 5 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Merrimac MA
 42.84°N 71.01°W (Elev. 135 ft)
Last Update:
2:20 pm EDT Aug 23, 2026
Forecast Valid:
2pm EDT Aug 23, 2026-6pm EDT Aug 29, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation