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

63°F

17°C

Humidity 73%
Wind Speed Calm
Barometer 30.22 in (1023.2 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 15 Aug 9:54 pm EDT
Extended Forecast for

Merrimac MA

  • Tonight

    Tonight: Clear, with a low around 57. Calm wind.

    Low: 57 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 84. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66. South wind 3 to 6 mph.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Increasing clouds and hot, with a high near 92. Heat index values as high as 95. Southwest wind 7 to 10 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Mostly cloudy, with a low around 59. Calm wind becoming northwest around 6 mph in the evening. Chance of precipitation is 50%.

    Low: 59 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 73. North wind around 7 mph.

    High: 73 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54. Light and variable wind.

    Low: 54 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 74. Light and variable wind becoming east around 6 mph in the morning.

    High: 74 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 55. Southeast wind around 5 mph becoming calm in the evening.

    Low: 55 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 57. Calm wind.
Saturday
Sunny, with a high near 84. Calm wind becoming south 5 to 7 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 66. South wind 3 to 6 mph.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Increasing clouds and hot, with a high near 92. Heat index values as high as 95. Southwest wind 7 to 10 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Mostly cloudy, with a low around 59. Calm wind becoming northwest around 6 mph in the evening. Chance of precipitation is 50%.
Monday
Mostly sunny, with a high near 73. North wind around 7 mph.
Monday Night
Partly cloudy, with a low around 54. Light and variable wind.
Tuesday
Mostly sunny, with a high near 74. Light and variable wind becoming east around 6 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 55. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 75. Calm wind becoming southeast around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 56. Southeast wind around 5 mph becoming light and variable in the evening.
Thursday
Sunny, with a high near 76. North wind around 6 mph.
Thursday Night
Mostly clear, with a low around 56. Southeast wind around 5 mph becoming light and variable in the evening.
Friday
Sunny, with a high near 81. Light and variable wind becoming northwest around 6 mph in the morning.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Merrimac MA
 42.84°N 71.01°W (Elev. 135 ft)
Last Update:
10:24 pm EDT Aug 15, 2025
Forecast Valid:
10pm EDT Aug 15, 2025-6pm EDT Aug 22, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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