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

45°F

7°C

Humidity 40%
Wind Speed NW 15 G 28 mph
Barometer 29.90 in (1012.4 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 21 Mar 2:54 pm EDT
Extended Forecast for

Merrimac MA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 50. Northwest wind around 11 mph, with gusts as high as 21 mph.

    High: 50 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of rain before 4am, then a chance of snow. Cloudy, with a low around 33. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 33 °F

    Slight Chance
    Rain then
    Chance
    Rain/Snow

  • Sunday

    Sunday: Snow likely before 9am, then rain. High near 43. Southeast wind 5 to 8 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 43 °F

    Rain/Snow
    then Rain

  • Sunday Night

    Sunday Night: Rain likely before 5am, then a chance of rain and snow. Cloudy, with a low around 32. North wind around 7 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 32 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Monday

    Monday: A chance of snow before 8am, then a chance of snow showers, mainly between 8am and 4pm. Cloudy, with a high near 38. North wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 38 °F

    Chance Snow

  • Monday Night

    Monday Night: A chance of snow showers, mainly before 2am. Mostly cloudy, with a low around 27. Northwest wind around 6 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.

    Low: 27 °F

    Chance Snow
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 42. Light and variable wind becoming northwest around 5 mph in the morning.

    High: 42 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 28. Southwest wind around 6 mph.

    Low: 28 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 48. Southwest wind 7 to 11 mph, with gusts as high as 22 mph.

    High: 48 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 50. Northwest wind around 11 mph, with gusts as high as 21 mph.
Tonight
A chance of rain before 4am, then a chance of snow. Cloudy, with a low around 33. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday
Snow likely before 9am, then rain. High near 43. Southeast wind 5 to 8 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Sunday Night
Rain likely before 5am, then a chance of rain and snow. Cloudy, with a low around 32. North wind around 7 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Monday
A chance of snow before 8am, then a chance of snow showers, mainly between 8am and 4pm. Cloudy, with a high near 38. North wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Monday Night
A chance of snow showers, mainly before 2am. Mostly cloudy, with a low around 27. Northwest wind around 6 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.
Tuesday
Mostly sunny, with a high near 42. Light and variable wind becoming northwest around 5 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 28. Southwest wind around 6 mph.
Wednesday
Partly sunny, with a high near 48. Southwest wind 7 to 11 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly cloudy, with a low around 28. West wind around 7 mph.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 49. South wind 6 to 9 mph. Chance of precipitation is 30%.
Thursday Night
Rain and snow likely. Mostly cloudy, with a low around 33. Southwest wind around 8 mph. Chance of precipitation is 70%.
Friday
A chance of rain and snow. Mostly sunny, with a high near 44. Northwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
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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 Mar 21, 2026
Forecast Valid:
2pm EDT Mar 21, 2026-6pm EDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation