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.

Overcast

44°F

7°C

Humidity 89%
Wind Speed S 8 mph
Barometer 30.21 in (1023.1 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 13 Apr 3:54 am EDT
Extended Forecast for

Merrimac MA

  • Overnight

    Overnight: A chance of showers. Cloudy, with a low around 42. South wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers before 8am, then a slight chance of showers after 2pm. Cloudy, with a high near 73. Southwest wind 10 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.

    High: 73 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56. Southwest wind 7 to 13 mph, with gusts as high as 23 mph.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers after 3pm. Mostly sunny, with a high near 72. Light and variable wind becoming southeast 5 to 9 mph in the afternoon. Chance of precipitation is 20%.

    High: 72 °F

    Sunny then
    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 55. Southeast wind 8 to 13 mph becoming west after midnight. Chance of precipitation is 50%.

    Low: 55 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers after 2pm. Mostly cloudy, with a high near 72. Light east wind becoming southeast 8 to 13 mph in the morning. Chance of precipitation is 30%.

    High: 72 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 5am. Mostly cloudy, with a low around 52. East wind 5 to 9 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 52 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers after 8am. Mostly cloudy, with a high near 64. East wind 3 to 7 mph. Chance of precipitation is 40%.

    High: 64 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 49. East wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 40%.

    Low: 49 °F

    Chance
    Showers

Detailed Forecast

Overnight
A chance of showers. Cloudy, with a low around 42. South wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Monday
A chance of showers before 8am, then a slight chance of showers after 2pm. Cloudy, with a high near 73. Southwest wind 10 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 56. Southwest wind 7 to 13 mph, with gusts as high as 23 mph.
Tuesday
A slight chance of showers after 3pm. Mostly sunny, with a high near 72. Light and variable wind becoming southeast 5 to 9 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 55. Southeast wind 8 to 13 mph becoming west after midnight. Chance of precipitation is 50%.
Wednesday
A chance of showers after 2pm. Mostly cloudy, with a high near 72. Light east wind becoming southeast 8 to 13 mph in the morning. Chance of precipitation is 30%.
Wednesday Night
A chance of showers before 5am. Mostly cloudy, with a low around 52. East wind 5 to 9 mph becoming calm in the evening. Chance of precipitation is 40%.
Thursday
A chance of showers after 8am. Mostly cloudy, with a high near 64. East wind 3 to 7 mph. Chance of precipitation is 40%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 49. East wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 40%.
Friday
A chance of showers. Partly sunny, with a high near 72. West wind 3 to 7 mph. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 49. Light northeast wind.
Saturday
Partly sunny, with a high near 65. East wind 3 to 7 mph.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 49. Southeast wind around 5 mph. Chance of precipitation is 30%.
Sunday
A chance of showers. Mostly cloudy, with a high near 69. Southwest wind 6 to 9 mph. Chance of precipitation is 40%.
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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:
3:11 am EDT Apr 13, 2026
Forecast Valid:
4am EDT Apr 13, 2026-6pm EDT Apr 19, 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