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.

Overcast

50°F

10°C

Humidity 89%
Wind Speed NE 5 mph
Barometer 29.95 in (1014.3 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 15 Apr 8:54 pm EDT
Extended Forecast for

Merrimac MA

  • Tonight

    Tonight: Showers likely before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then a chance of showers and thunderstorms after 5am. Patchy fog. Otherwise, cloudy, with a low around 48. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 48 °F

    Showers
    Likely and
    Patchy Fog

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 2pm. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 64. Light and variable wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 64 °F

    Chance
    Showers and
    Patchy Fog
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 68. Light and variable wind becoming northeast 5 to 7 mph in the morning. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 68 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers before 10pm. Mostly cloudy, with a low around 46. Light northeast wind. Chance of precipitation is 20%.

    Low: 46 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 56. East wind 5 to 7 mph.

    High: 56 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A chance of showers after 3am. Cloudy, with a low around 44. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 44 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 11am. Cloudy, with a high near 58. South wind 5 to 9 mph becoming west in the afternoon. Chance of precipitation is 60%.

    High: 58 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of rain showers before 2am, then a chance of rain and snow showers between 2am and 4am, then a chance of snow showers after 4am. Mostly cloudy, with a low around 34. West wind around 8 mph. Chance of precipitation is 50%.

    Low: 34 °F

    Chance
    Showers then
    Chance
    Rain/Snow

Detailed Forecast

Tonight
Showers likely before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then a chance of showers and thunderstorms after 5am. Patchy fog. Otherwise, cloudy, with a low around 48. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 64. Light and variable wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 68. Light and variable wind becoming northeast 5 to 7 mph in the morning. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A slight chance of showers before 10pm. Mostly cloudy, with a low around 46. Light northeast wind. Chance of precipitation is 20%.
Saturday
Mostly cloudy, with a high near 56. East wind 5 to 7 mph.
Saturday Night
A chance of showers after 3am. Cloudy, with a low around 44. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Sunday
Showers likely, mainly after 11am. Cloudy, with a high near 58. South wind 5 to 9 mph becoming west in the afternoon. Chance of precipitation is 60%.
Sunday Night
A chance of rain showers before 2am, then a chance of rain and snow showers between 2am and 4am, then a chance of snow showers after 4am. Mostly cloudy, with a low around 34. West wind around 8 mph. Chance of precipitation is 50%.
Monday
Mostly sunny, with a high near 48. West wind around 10 mph, with gusts as high as 21 mph.
Monday Night
Partly cloudy, with a low around 29. Northwest wind around 7 mph.
Tuesday
Sunny, with a high near 54. West wind 6 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 40. Southwest wind around 7 mph.
Wednesday
Partly sunny, with a high near 61. West wind 6 to 9 mph.
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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:
6:33 pm EDT Apr 15, 2026
Forecast Valid:
9pm EDT Apr 15, 2026-6pm EDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation