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

70°F

21°C

Humidity 93%
Wind Speed NE 3 mph
Barometer 29.88 in (1011.8 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 18 Aug 7:54 am EDT
Extended Forecast for

Merrimac MA

  • Today

    Today: A slight chance of showers after 1pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 78. East wind 3 to 8 mph. Chance of precipitation is 20%.

    High: 78 °F

    Patchy Fog
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 63. Light east wind.

    Low: 63 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Partly sunny, with a high near 82. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 82 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 65. Light west wind.

    Low: 65 °F

    Partly Cloudy

  • Thursday

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

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79. Light and variable wind becoming east around 5 mph in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers after 1pm. Partly sunny, with a high near 77. East wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 77 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
A slight chance of showers after 1pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 78. East wind 3 to 8 mph. Chance of precipitation is 20%.
Tonight
Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 63. Light east wind.
Wednesday
Partly sunny, with a high near 82. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 65. Light west wind.
Thursday
Mostly sunny, with a high near 82. Light and variable wind.
Thursday Night
Partly cloudy, with a low around 59. Calm wind.
Friday
Mostly sunny, with a high near 79. Light and variable wind becoming east around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 59. Calm wind.
Saturday
A chance of showers after 1pm. Partly sunny, with a high near 77. East wind 3 to 6 mph. Chance of precipitation is 30%.
Saturday Night
Showers likely, mainly after 3am. Mostly cloudy, with a low around 60. Light northeast wind. Chance of precipitation is 60%.
Sunday
Showers likely. Partly sunny, with a high near 77. Northeast wind 3 to 5 mph. Chance of precipitation is 60%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 59. Light and variable wind. Chance of precipitation is 40%.
Monday
A chance of showers. Partly sunny, with a high near 79. West wind around 6 mph. Chance of precipitation is 30%.
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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:
6:13 am EDT Aug 18, 2026
Forecast Valid:
8am EDT Aug 18, 2026-6pm EDT Aug 24, 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