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.

Light Rain Fog/Mist

54°F

12°C

Humidity 97%
Wind Speed Calm
Barometer 29.76 in (1007.7 mb)
Dewpoint 53°F (12°C)
Visibility 4.00 mi
Last update 17 Apr 5:54 am EDT
Extended Forecast for

Merrimac MA

  • Overnight

    Overnight: A chance of rain. Patchy fog. Otherwise, cloudy, with a low around 46. Calm wind. Chance of precipitation is 30%.

    Low: 46 °F

    Chance Rain
    and Patchy
    Fog

  • Friday

    Friday: A chance of rain, mainly before 11am. Patchy fog between 10am and 2pm. Otherwise, mostly cloudy, with a high near 63. Calm wind becoming northeast 5 to 7 mph in the morning. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Chance Rain
    and Patchy
    Fog

  • Friday Night

    Friday Night: Patchy fog between 11pm and midnight. Otherwise, increasing clouds, with a low around 45. Light and variable wind.

    Low: 45 °F

    Patchy Fog
    then Partly
    Cloudy

  • Saturday

    Saturday: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 52. East wind 6 to 8 mph.

    High: 52 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: A slight chance of showers after 3am. Cloudy, with a low around 42. Light and variable wind. Chance of precipitation is 20%.

    Low: 42 °F

    Cloudy then
    Slight Chance
    Showers

  • Sunday

    Sunday: Showers, mainly after 10am. High near 55. Light and variable wind becoming west 5 to 9 mph in the morning. Chance of precipitation is 80%.

    High: 55 °F

    Showers

  • Sunday Night

    Sunday Night: Showers, mainly before 8pm. Low around 33. West wind around 8 mph. Chance of precipitation is 80%.

    Low: 33 °F

    Showers then
    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 48. West wind around 9 mph, with gusts as high as 20 mph.

    High: 48 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 28. Northwest wind around 6 mph.

    Low: 28 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of rain. Patchy fog. Otherwise, cloudy, with a low around 46. Calm wind. Chance of precipitation is 30%.
Friday
A chance of rain, mainly before 11am. Patchy fog between 10am and 2pm. Otherwise, mostly cloudy, with a high near 63. Calm wind becoming northeast 5 to 7 mph in the morning. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Patchy fog between 11pm and midnight. Otherwise, increasing clouds, with a low around 45. Light and variable wind.
Saturday
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 52. East wind 6 to 8 mph.
Saturday Night
A slight chance of showers after 3am. Cloudy, with a low around 42. Light and variable wind. Chance of precipitation is 20%.
Sunday
Showers, mainly after 10am. High near 55. Light and variable wind becoming west 5 to 9 mph in the morning. Chance of precipitation is 80%.
Sunday Night
Showers, mainly before 8pm. Low around 33. West wind around 8 mph. Chance of precipitation is 80%.
Monday
Mostly sunny, with a high near 48. West wind around 9 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 28. Northwest wind around 6 mph.
Tuesday
Sunny, with a high near 50. Northwest wind around 6 mph becoming south in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 37. Southwest wind around 6 mph.
Wednesday
Partly sunny, with a high near 59. West wind around 7 mph.
Wednesday Night
Partly cloudy, with a low around 39. Northwest wind around 5 mph.
Thursday
Mostly sunny, with a high near 60. Northwest wind around 7 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Merrimac MA
 42.84°N 71.01°W (Elev. 135 ft)
Last Update:
5:24 am EDT Apr 17, 2026
Forecast Valid:
5am EDT Apr 17, 2026-6pm EDT Apr 23, 2026
 
Forecast Discussion
 
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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