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

40°F

4°C

Humidity 47%
Wind Speed N 5 mph
Barometer 30.52 in (1033.4 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 12 Apr 7:54 am EDT
Extended Forecast for

Merrimac MA

  • Today

    Today: Increasing clouds, with a high near 56. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 56 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Showers likely, mainly between 11pm and 3am. Cloudy, with a low around 41. South wind 7 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 41 °F

    Showers
    Likely

  • Monday

    Monday: Isolated showers before 8am, then scattered showers after 11am. Mostly cloudy, with a high near 68. Southwest wind 14 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Scattered showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 56. West wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    Low: 56 °F

    Scattered
    Showers then
    Mostly Clear

  • Tuesday

    Tuesday: Isolated showers after 3pm. Mostly sunny, with a high near 77. Light and variable wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 20%.

    High: 77 °F

    Mostly Sunny
    then Isolated
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers, mainly before 1am. Mostly cloudy, with a low around 57. Southwest wind around 6 mph. Chance of precipitation is 40%.

    Low: 57 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 74. West wind around 7 mph.

    High: 74 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 51. Light northwest wind. Chance of precipitation is 40%.

    Low: 51 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers. Mostly cloudy, with a high near 69. Southeast wind 5 to 7 mph. Chance of precipitation is 40%.

    High: 69 °F

    Chance
    Showers

Detailed Forecast

Today
Increasing clouds, with a high near 56. Calm wind becoming south 5 to 7 mph in the afternoon.
Tonight
Showers likely, mainly between 11pm and 3am. Cloudy, with a low around 41. South wind 7 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Isolated showers before 8am, then scattered showers after 11am. Mostly cloudy, with a high near 68. Southwest wind 14 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Scattered showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 56. West wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Tuesday
Isolated showers after 3pm. Mostly sunny, with a high near 77. Light and variable wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Scattered showers, mainly before 1am. Mostly cloudy, with a low around 57. Southwest wind around 6 mph. Chance of precipitation is 40%.
Wednesday
Mostly cloudy, with a high near 74. West wind around 7 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 51. Light northwest wind. Chance of precipitation is 40%.
Thursday
A chance of showers. Mostly cloudy, with a high near 69. Southeast wind 5 to 7 mph. Chance of precipitation is 40%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 52. Southeast wind around 5 mph becoming southwest after midnight. Chance of precipitation is 40%.
Friday
Partly sunny, with a high near 72. Northwest wind 5 to 7 mph.
Friday Night
Partly cloudy, with a low around 48. Light northeast wind.
Saturday
Mostly sunny, with a high near 67. Light and variable wind becoming southeast 5 to 7 mph in the morning.
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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:
4:12 am EDT Apr 12, 2026
Forecast Valid:
8am EDT Apr 12, 2026-6pm EDT Apr 18, 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