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

66°F

19°C

Humidity 90%
Wind Speed NE 13 mph
Barometer 30.13 in (1020.3 mb)
Dewpoint 63°F (17°C)
Visibility 9.00 mi
Last update 7 Jul 12:54 pm EDT
Extended Forecast for

Merrimac MA

  • This Afternoon

    This Afternoon: Showers, with thunderstorms also possible after 2pm. Patchy fog. High near 69. Northeast wind around 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 69 °F

    Showers and
    Patchy Fog

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Cloudy, with a low around 57. North wind 3 to 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Showers
    Likely then
    Chance
    Showers

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 79. Light north wind.

    High: 79 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 61. Light and variable wind.

    Low: 61 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 89. Southwest wind 5 to 7 mph.

    High: 89 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers between 11pm and midnight. Partly cloudy, with a low around 68. Southwest wind around 6 mph. Chance of precipitation is 20%.

    Low: 68 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 89. West wind around 5 mph. Chance of precipitation is 60%.

    High: 89 °F

    Mostly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 8pm, then a chance of showers between 8pm and 10pm. Mostly cloudy, with a low around 65. Light northwest wind. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 83. Light and variable wind becoming north around 5 mph in the morning.

    High: 83 °F

    Sunny

Detailed Forecast

This Afternoon
Showers, with thunderstorms also possible after 2pm. Patchy fog. High near 69. Northeast wind around 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Cloudy, with a low around 57. North wind 3 to 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 79. Light north wind.
Wednesday Night
Mostly clear, with a low around 61. Light and variable wind.
Thursday
Mostly sunny, with a high near 89. Southwest wind 5 to 7 mph.
Thursday Night
A slight chance of showers between 11pm and midnight. Partly cloudy, with a low around 68. Southwest wind around 6 mph. Chance of precipitation is 20%.
Friday
A chance of showers and thunderstorms between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 89. West wind around 5 mph. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms likely before 8pm, then a chance of showers between 8pm and 10pm. Mostly cloudy, with a low around 65. Light northwest wind. Chance of precipitation is 60%.
Saturday
Sunny, with a high near 83. Light and variable wind becoming north around 5 mph in the morning.
Saturday Night
Mostly clear, with a low around 63. Calm wind.
Sunday
Sunny, with a high near 84. Calm wind becoming east around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 64. Southeast wind around 5 mph becoming light and variable in the evening.
Monday
A chance of showers. Mostly sunny, with a high near 86. Southeast wind 3 to 7 mph. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Merrimac MA
 42.84°N 71.01°W (Elev. 135 ft)
Last Update:
10:57 am EDT Jul 7, 2026
Forecast Valid:
1pm EDT Jul 7, 2026-6pm EDT Jul 13, 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