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.

Fog

44°F

7°C

Humidity 96%
Wind Speed Calm
Barometer 30.10 in (1019.3 mb)
Dewpoint 43°F (6°C)
Visibility 0.25 mi
Last update 18 Apr 4:54 am EDT
Extended Forecast for

Merrimac MA

  • Today

    Today: Areas of fog before noon. Otherwise, cloudy, with a high near 50. East wind 3 to 8 mph.

    High: 50 °F

    Areas Fog
    then Mostly
    Cloudy

  • Tonight

    Tonight: Patchy fog. Otherwise, cloudy, with a low around 42. East wind around 5 mph becoming calm in the evening.

    Low: 42 °F

    Patchy Fog

  • Sunday

    Sunday: Rain, mainly after 8am. Patchy fog. High near 53. Light and variable wind becoming northwest 5 to 8 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 53 °F

    Rain and
    Patchy Fog

  • Sunday Night

    Sunday Night: Rain, mainly before 10pm. Low around 33. West wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 33 °F

    Rain then
    Chance Rain

  • Monday

    Monday: Mostly sunny, with a high near 50. West wind around 7 mph.

    High: 50 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 27. North wind around 5 mph.

    Low: 27 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 49. Light and variable wind becoming southeast around 6 mph in the morning.

    High: 49 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36. Southwest wind around 6 mph.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 58. Southwest wind around 7 mph.

    High: 58 °F

    Partly Sunny

Detailed Forecast

Today
Areas of fog before noon. Otherwise, cloudy, with a high near 50. East wind 3 to 8 mph.
Tonight
Patchy fog. Otherwise, cloudy, with a low around 42. East wind around 5 mph becoming calm in the evening.
Sunday
Rain, mainly after 8am. Patchy fog. High near 53. Light and variable wind becoming northwest 5 to 8 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain, mainly before 10pm. Low around 33. West wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Mostly sunny, with a high near 50. West wind around 7 mph.
Monday Night
Partly cloudy, with a low around 27. North wind around 5 mph.
Tuesday
Sunny, with a high near 49. Light and variable wind becoming southeast around 6 mph in the morning.
Tuesday Night
Mostly cloudy, with a low around 36. Southwest wind around 6 mph.
Wednesday
Partly sunny, with a high near 58. Southwest wind around 7 mph.
Wednesday Night
Partly cloudy, with a low around 37. West wind around 5 mph.
Thursday
Mostly sunny, with a high near 59. Northwest wind 5 to 7 mph.
Thursday Night
Partly cloudy, with a low around 40. Light northwest wind.
Friday
Partly sunny, with a high near 58. North wind 5 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Merrimac MA
 42.84°N 70.99°W (Elev. 98 ft)
Last Update:
2:29 am EDT Apr 18, 2026
Forecast Valid:
5am EDT Apr 18, 2026-6pm EDT Apr 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