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.

Fog/Mist

44°F

7°C

Humidity 100%
Wind Speed Calm
Barometer 29.84 in (1010.7 mb)
Dewpoint 44°F (7°C)
Visibility 5.00 mi
Last update 19 Apr 5:54 am EDT
Extended Forecast for

Merrimac MA

  • Today

    Today: Rain, with thunderstorms also possible after 11am. Patchy fog before 3pm. High near 53. Light and variable wind becoming northwest 9 to 14 mph in the morning. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 53 °F

    Rain and
    Patchy Fog

  • Tonight

    Tonight: A chance of rain, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 33. West wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 33 °F

    Chance Rain
    then Mostly
    Clear

  • Monday

    Monday: A slight chance of rain after 2pm. Increasing clouds, with a high near 49. West wind around 7 mph. Chance of precipitation is 20%.

    High: 49 °F

    Sunny then
    Slight Chance
    Rain

  • Monday Night

    Monday Night: Partly cloudy, with a low around 29. North wind around 6 mph.

    Low: 29 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 48. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 48 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers after 2am. Partly cloudy, with a low around 34. South wind around 6 mph. Chance of precipitation is 20%.

    Low: 34 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 53. South wind 5 to 7 mph.

    High: 53 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 38. South wind around 5 mph becoming light and variable in the evening.

    Low: 38 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 60. Northwest wind 5 to 7 mph.

    High: 60 °F

    Partly Sunny

Detailed Forecast

Today
Rain, with thunderstorms also possible after 11am. Patchy fog before 3pm. High near 53. Light and variable wind becoming northwest 9 to 14 mph in the morning. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A chance of rain, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 33. West wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
A slight chance of rain after 2pm. Increasing clouds, with a high near 49. West wind around 7 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 29. North wind around 6 mph.
Tuesday
Sunny, with a high near 48. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
A slight chance of showers after 2am. Partly cloudy, with a low around 34. South wind around 6 mph. Chance of precipitation is 20%.
Wednesday
Mostly cloudy, with a high near 53. South wind 5 to 7 mph.
Wednesday Night
Mostly cloudy, with a low around 38. South wind around 5 mph becoming light and variable in the evening.
Thursday
Partly sunny, with a high near 60. Northwest wind 5 to 7 mph.
Thursday Night
Partly cloudy, with a low around 38. North wind 3 to 5 mph.
Friday
Partly sunny, with a high near 57. Light and variable wind becoming northeast 5 to 7 mph in the morning.
Friday Night
Partly cloudy, with a low around 39. Light and variable wind.
Saturday
Partly sunny, with a high near 57. Light and variable wind becoming east 5 to 7 mph in the morning.
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ABOUT THIS FORECAST

 
Point Forecast:
Merrimac MA
 42.84°N 71.01°W (Elev. 135 ft)
Last Update:
3:05 am EDT Apr 19, 2026
Forecast Valid:
6am EDT Apr 19, 2026-6pm EDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation