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

66°F

19°C

Humidity 90%
Wind Speed NE 5 mph
Barometer 30.28 in (1025.3 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 17 Sep 5:54 am EDT
Extended Forecast for

Merrimac MA

  • Today

    Today: Partly sunny, with a high near 76. Light and variable wind.

    High: 76 °F

    Partly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then showers likely and possibly a thunderstorm between 9pm and 1am, then a chance of showers after 1am. Patchy fog. Otherwise, mostly cloudy, with a low around 62. Light and variable wind. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 62 °F

    Showers
    Likely and
    Patchy Fog

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 74. Northwest wind 7 to 10 mph, with gusts as high as 22 mph.

    High: 74 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48. Northwest wind 3 to 7 mph.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 64. Light and variable wind.

    High: 64 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 48. Light south wind.

    Low: 48 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 61. Southeast wind 3 to 5 mph. Chance of precipitation is 70%.

    High: 61 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely, mainly before 9pm. Mostly cloudy, with a low around 49. Light north wind. Chance of precipitation is 60%.

    Low: 49 °F

    Showers
    Likely

  • Monday

    Monday: Mostly sunny, with a high near 63. Northeast wind 5 to 7 mph.

    High: 63 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 76. Light and variable wind.
Tonight
A chance of showers and thunderstorms before 9pm, then showers likely and possibly a thunderstorm between 9pm and 1am, then a chance of showers after 1am. Patchy fog. Otherwise, mostly cloudy, with a low around 62. Light and variable wind. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 74. Northwest wind 7 to 10 mph, with gusts as high as 22 mph.
Friday Night
Partly cloudy, with a low around 48. Northwest wind 3 to 7 mph.
Saturday
Sunny, with a high near 64. Light and variable wind.
Saturday Night
Mostly cloudy, with a low around 48. Light south wind.
Sunday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 61. Southeast wind 3 to 5 mph. Chance of precipitation is 70%.
Sunday Night
Showers likely, mainly before 9pm. Mostly cloudy, with a low around 49. Light north wind. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 63. Northeast wind 5 to 7 mph.
Monday Night
Mostly cloudy, with a low around 47. Light north wind.
Tuesday
Mostly sunny, with a high near 61. East wind around 7 mph.
Tuesday Night
Mostly clear, with a low around 46. Light northeast wind.
Wednesday
Sunny, with a high near 62. East wind 5 to 7 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Merrimac MA
 42.84°N 70.99°W (Elev. 98 ft)
Last Update:
3:30 am EDT Sep 17, 2026
Forecast Valid:
5am EDT Sep 17, 2026-6pm EDT Sep 23, 2026
 
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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