National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Lawrence Municipal Airport (KLWM)

Lat: 42.71°NLon: 71.13°WElev: 135ft.

A Few Clouds

35°F

2°C

Humidity 76%
Wind Speed Calm
Barometer 30.01 in (1016.2 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 20 Feb 9:54 am EST
Extended Forecast for

Merrimac MA

Winter Weather Advisory until February 21, 07:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until February 21, 07:00am

    NOW until 7:00am Sat

    Winter Weather Advisory

  • Today

    High: 39 °F

    Cloudy then
    Rain/Snow

  • Tonight

    Tonight: Snow, mainly before 4am. Steady temperature around 31. East wind around 6 mph becoming north after midnight. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 31 °F

    Snow

  • Saturday

    Saturday: A chance of snow, mainly before 4pm. Mostly cloudy, with a high near 32. Northeast wind 3 to 6 mph. Chance of precipitation is 30%. New snow accumulation of less than one inch possible.

    High: 32 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A slight chance of snow before 1am. Partly cloudy, with a low around 19. Light north wind. Chance of precipitation is 20%.

    Low: 19 °F

    Slight Chance
    Snow

  • Sunday

    Sunday: A slight chance of snow after 2pm. Partly sunny, with a high near 35. Northeast wind 5 to 7 mph. Chance of precipitation is 20%.

    High: 35 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A chance of snow. Cloudy, with a low around 25. Northeast wind 6 to 10 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.

    Low: 25 °F

    Chance Snow

  • Monday

    Monday: A chance of snow. Cloudy, with a high near 32. North wind 9 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

    High: 32 °F

    Chance Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 19. Northwest wind around 6 mph.

    Low: 19 °F

    Mostly Cloudy

Detailed Forecast

Today
A chance of rain before 3pm, then snow. High near 39. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 80%. Little or no snow accumulation expected.
Tonight
Snow, mainly before 4am. Steady temperature around 31. East wind around 6 mph becoming north after midnight. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Saturday
A chance of snow, mainly before 4pm. Mostly cloudy, with a high near 32. Northeast wind 3 to 6 mph. Chance of precipitation is 30%. New snow accumulation of less than one inch possible.
Saturday Night
A slight chance of snow before 1am. Partly cloudy, with a low around 19. Light north wind. Chance of precipitation is 20%.
Sunday
A slight chance of snow after 2pm. Partly sunny, with a high near 35. Northeast wind 5 to 7 mph. Chance of precipitation is 20%.
Sunday Night
A chance of snow. Cloudy, with a low around 25. Northeast wind 6 to 10 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.
Monday
A chance of snow. Cloudy, with a high near 32. North wind 9 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around 19. Northwest wind around 6 mph.
Tuesday
Mostly sunny, with a high near 34. Northwest wind around 7 mph.
Tuesday Night
Partly cloudy, with a low around 13. West wind 3 to 5 mph.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 37. South wind 3 to 8 mph. Chance of precipitation is 30%.
Wednesday Night
Rain and snow likely. Mostly cloudy, with a low around 28. Southwest wind around 7 mph. Chance of precipitation is 60%.
Thursday
A chance of rain. Mostly cloudy, with a high near 42. Southwest wind 6 to 8 mph. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Merrimac MA
 42.84°N 71.01°W (Elev. 135 ft)
Last Update:
7:35 am EST Feb 20, 2026
Forecast Valid:
10am EST Feb 20, 2026-6pm EST Feb 26, 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