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.

Fair

78°F

26°C

Humidity 40%
Wind Speed W 7 mph
Barometer 30.06 in (1017.8 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 25 Jun 5:54 pm EDT
Extended Forecast for

Merrimac MA

  • Tonight

    Tonight: A chance of showers, mainly after 3am. Mostly cloudy, with a low around 65. Southeast wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 65 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 77. South wind 3 to 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers
    Likely and
    Patchy Fog

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 11pm. Increasing clouds, with a low around 64. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers, mainly after 1pm. Partly sunny, with a high near 77. Light and variable wind. Chance of precipitation is 30%.

    High: 77 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers, mainly before 7pm. Mostly cloudy, with a low around 59. Calm wind. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 82. Light and variable wind.

    High: 82 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. Calm wind.

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 82. Light and variable wind.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers, mainly after 3am. Mostly cloudy, with a low around 65. Southeast wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 77. South wind 3 to 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 11pm. Increasing clouds, with a low around 64. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers, mainly after 1pm. Partly sunny, with a high near 77. Light and variable wind. Chance of precipitation is 30%.
Saturday Night
A chance of showers, mainly before 7pm. Mostly cloudy, with a low around 59. Calm wind. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 82. Light and variable wind.
Sunday Night
Mostly clear, with a low around 61. Calm wind.
Monday
Sunny, with a high near 82. Light and variable wind.
Monday Night
Partly cloudy, with a low around 64. Calm wind.
Tuesday
Mostly sunny, with a high near 84. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 66. Calm wind.
Wednesday
Mostly sunny, with a high near 86. Calm wind becoming southeast around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 69. Light southwest wind.
Thursday
Mostly sunny and hot, with a high near 90. Southwest wind around 6 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Merrimac MA
 42.84°N 70.99°W (Elev. 98 ft)
Last Update:
2:29 pm EDT Jun 25, 2026
Forecast Valid:
6pm EDT Jun 25, 2026-6pm EDT Jul 2, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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