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.

Mostly Cloudy

44°F

7°C

Humidity 71%
Wind Speed E 13 G 21 mph
Barometer 30.04 in (1017.3 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 11 Mar 12:54 pm EDT
Extended Forecast for

Merrimac MA

  • This Afternoon

    This Afternoon: A slight chance of rain. Mostly cloudy, with a high near 42. East wind 6 to 8 mph. Chance of precipitation is 20%.

    High: 42 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A chance of rain, with thunderstorms also possible after 11pm. Patchy fog before 11pm, then patchy fog after 2am. Otherwise, mostly cloudy, with a temperature rising to around 56 by 2am. Light and variable wind becoming southwest 5 to 10 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

    Low: 41 °F⇑

    Chance Rain
    and Patchy
    Fog

  • Thursday

    Thursday: Rain likely before 5pm, then a chance of rain and snow. Patchy fog before 9am. Otherwise, mostly cloudy, with a temperature falling to around 37 by 5pm. West wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 55 °F⇓

    Rain Likely
    and Patchy
    Fog then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: A chance of snow, mainly before 7pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 26. West wind 7 to 10 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 26 °F

    Chance Snow
    then Mostly
    Clear

  • Friday

    Friday: Mostly sunny, with a high near 44. South wind 6 to 9 mph.

    High: 44 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of rain and snow before 10pm, then a chance of rain. Mostly cloudy, with a low around 33. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 33 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 46. West wind 11 to 16 mph, with gusts as high as 31 mph.

    High: 46 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 25. West wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 25 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 44. Light and variable wind becoming south around 6 mph in the morning.

    High: 44 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A slight chance of rain. Mostly cloudy, with a high near 42. East wind 6 to 8 mph. Chance of precipitation is 20%.
Tonight
A chance of rain, with thunderstorms also possible after 11pm. Patchy fog before 11pm, then patchy fog after 2am. Otherwise, mostly cloudy, with a temperature rising to around 56 by 2am. Light and variable wind becoming southwest 5 to 10 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 40%.
Thursday
Rain likely before 5pm, then a chance of rain and snow. Patchy fog before 9am. Otherwise, mostly cloudy, with a temperature falling to around 37 by 5pm. West wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Thursday Night
A chance of snow, mainly before 7pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 26. West wind 7 to 10 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Friday
Mostly sunny, with a high near 44. South wind 6 to 9 mph.
Friday Night
A chance of rain and snow before 10pm, then a chance of rain. Mostly cloudy, with a low around 33. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Saturday
Mostly sunny, with a high near 46. West wind 11 to 16 mph, with gusts as high as 31 mph.
Saturday Night
Partly cloudy, with a low around 25. West wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday
Mostly cloudy, with a high near 44. Light and variable wind becoming south around 6 mph in the morning.
Sunday Night
Rain likely, mainly after 2am. Cloudy, with a low around 33. Southeast wind 7 to 9 mph. Chance of precipitation is 60%.
Monday
Rain. High near 57. Southeast wind 11 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 90%.
Monday Night
Rain likely. Mostly cloudy, with a low around 29. West wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Tuesday
Sunny, with a high near 40. West wind around 11 mph, with gusts as high as 23 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Merrimac MA
 42.84°N 71.01°W (Elev. 135 ft)
Last Update:
7:06 am EDT Mar 11, 2026
Forecast Valid:
1pm EDT Mar 11, 2026-6pm EDT Mar 17, 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