Weather forecast for: Merrimac MA
Last Update: 2:28 am EDT Aug 18, 2026
Today: A slight chance of showers after 1pm. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 78. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 20%.
Tonight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 62. Calm wind.
Wednesday: Patchy fog before 7am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 85. Calm wind becoming southwest around 5 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 60. Calm wind.
Friday: Mostly sunny, with a high near 80. 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 4am. 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%.
WeatherWorld.com
