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.

Fog/Mist

40°F

4°C

Humidity 97%
Wind Speed Calm
Barometer 29.90 in (1012.5 mb)
Dewpoint 39°F (4°C)
Visibility 1.25 mi
Last update 5 Apr 8:54 am EDT
Extended Forecast for

Merrimac MA

  • Today

    Today: Showers and possibly a thunderstorm. Patchy fog before 1pm. High near 56. West wind 5 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 56 °F

    Chance
    Showers and
    Patchy Fog
    then Showers
    and Patchy
    Fog

  • Tonight

    Tonight: A chance of showers before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 36. West wind 7 to 11 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Chance
    Showers then
    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 50. West wind 13 to 15 mph, with gusts as high as 28 mph.

    High: 50 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: A slight chance of snow showers after 2am. Partly cloudy, with a low around 31. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 31 °F

    Partly Cloudy
    then Slight
    Chance Snow
    Showers

  • Tuesday

    Tuesday: A chance of rain and snow showers before 11am, then a chance of rain showers between 11am and 5pm, then a chance of rain and snow showers after 5pm. Partly sunny, with a high near 45. Northwest wind 5 to 8 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 45 °F

    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A chance of snow showers, mainly before 7pm. Mostly clear, with a low around 24. Northwest wind around 6 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 24 °F

    Chance Snow
    Showers then
    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 47. Light and variable wind becoming southwest around 6 mph in the morning.

    High: 47 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 30. South wind around 6 mph.

    Low: 30 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 57. South wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 57 °F

    Sunny

Detailed Forecast

Today
Showers and possibly a thunderstorm. Patchy fog before 1pm. High near 56. West wind 5 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 36. West wind 7 to 11 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Increasing clouds, with a high near 50. West wind 13 to 15 mph, with gusts as high as 28 mph.
Monday Night
A slight chance of snow showers after 2am. Partly cloudy, with a low around 31. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Tuesday
A chance of rain and snow showers before 11am, then a chance of rain showers between 11am and 5pm, then a chance of rain and snow showers after 5pm. Partly sunny, with a high near 45. Northwest wind 5 to 8 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Tuesday Night
A chance of snow showers, mainly before 7pm. Mostly clear, with a low around 24. Northwest wind around 6 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Wednesday
Sunny, with a high near 47. Light and variable wind becoming southwest around 6 mph in the morning.
Wednesday Night
Mostly clear, with a low around 30. South wind around 6 mph.
Thursday
Sunny, with a high near 57. South wind 6 to 10 mph, with gusts as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 40. Southwest wind around 7 mph.
Friday
Mostly sunny, with a high near 66. Southwest wind 6 to 8 mph.
Friday Night
Mostly cloudy, with a low around 43. Southwest wind around 6 mph.
Saturday
Partly sunny, with a high near 62. Southwest wind 5 to 7 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Merrimac MA
 42.84°N 71.01°W (Elev. 135 ft)
Last Update:
2:32 am EDT Apr 5, 2026
Forecast Valid:
9am EDT Apr 5, 2026-6pm EDT Apr 11, 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