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.

Light Rain Fog/Mist

33°F

1°C

Humidity 96%
Wind Speed NE 14 mph
Barometer 30.39 in (1029.2 mb)
Dewpoint 32°F (0°C)
Visibility 2.50 mi
Wind Chill23°F (-5°C)
Last update 6 Mar 2:54 am EST
Extended Forecast for

Merrimac MA

Winter Weather Advisory March 6, 03:40am until March 6, 12:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory March 6, 03:40am until March 6, 12:00pm

    NOW until 12:00pm Fri

    Winter Weather Advisory

  • Overnight

    Low: 28 °F

    Snow

  • Friday

    Friday: Snow and freezing rain before noon, then a chance of rain showers between noon and 2pm, then a chance of freezing rain after 2pm. Areas of fog after 1pm. High near 33. Northeast wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    High: 33 °F

    Wintry Mix
    then Chance
    Rain/Freezing
    Rain and
    Areas Fog

  • Friday Night

    Friday Night: A slight chance of showers. Areas of fog. Otherwise, cloudy, with a low around 33. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 33 °F

    Slight Chance
    Showers and
    Areas Fog

  • Saturday

    Saturday: A chance of showers before 8am, then a slight chance of rain between 8am and noon. Areas of fog before noon. Otherwise, cloudy, with a high near 49. South wind 3 to 8 mph. Chance of precipitation is 30%.

    High: 49 °F

    Chance
    Showers and
    Areas Fog
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: A chance of rain, mainly after 8pm. Patchy fog before 8pm. Otherwise, mostly cloudy, with a low around 42. Southwest wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    Low: 42 °F

    Chance Rain
    and Patchy
    Fog

  • Sunday

    Sunday: A chance of rain, mainly before 8am. Partly sunny, with a high near 56. West wind around 7 mph. Chance of precipitation is 30%.

    High: 56 °F

    Chance Rain
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 33. Southwest wind around 6 mph.

    Low: 33 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 59. Southwest wind 6 to 9 mph.

    High: 59 °F

    Sunny

Detailed Forecast

Overnight
Snow. Low around 28. Northeast wind 11 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 5 inches possible.
Friday
Snow and freezing rain before noon, then a chance of rain showers between noon and 2pm, then a chance of freezing rain after 2pm. Areas of fog after 1pm. High near 33. Northeast wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Friday Night
A slight chance of showers. Areas of fog. Otherwise, cloudy, with a low around 33. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Saturday
A chance of showers before 8am, then a slight chance of rain between 8am and noon. Areas of fog before noon. Otherwise, cloudy, with a high near 49. South wind 3 to 8 mph. Chance of precipitation is 30%.
Saturday Night
A chance of rain, mainly after 8pm. Patchy fog before 8pm. Otherwise, mostly cloudy, with a low around 42. Southwest wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Sunday
A chance of rain, mainly before 8am. Partly sunny, with a high near 56. West wind around 7 mph. Chance of precipitation is 30%.
Sunday Night
Mostly clear, with a low around 33. Southwest wind around 6 mph.
Monday
Sunny, with a high near 59. Southwest wind 6 to 9 mph.
Monday Night
Mostly clear, with a low around 40. Southwest wind around 7 mph.
Tuesday
Sunny, with a high near 61. West wind around 6 mph.
Tuesday Night
Partly cloudy, with a low around 36. Light and variable wind becoming east around 5 mph after midnight.
Wednesday
A chance of rain. Mostly cloudy, with a high near 51. East wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 33. East wind around 11 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 60%.
Thursday
A chance of rain. Partly sunny, with a high near 47. Northwest wind 11 to 13 mph, with gusts as high as 24 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:
2:29 am EST Mar 6, 2026
Forecast Valid:
3am EST Mar 6, 2026-6pm EDT Mar 12, 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