| NWS Forecast for: Merrimac MA Issued by: National Weather Service Norton, MA Last Update: 2:37 am EDT Jul 8, 2025 |  |
Today: A chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Heat index values as high as 96. Light and variable wind becoming northwest around 6 mph in the morning. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Tonight: A chance of showers and thunderstorms. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Wednesday: A chance of showers and thunderstorms before 11am, then a chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 73. East wind 3 to 6 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. Thursday: A chance of showers, with thunderstorms also possible after 2pm. Cloudy, with a high near 72. East wind 3 to 6 mph. Chance of precipitation is 40%. Thursday Night: A chance of showers and thunderstorms. Cloudy, with a low around 62. Light northeast wind. Chance of precipitation is 40%. Friday: Mostly cloudy, with a high near 77. Light and variable wind. Friday Night: Mostly cloudy, with a low around 63. Calm wind. Saturday: Partly sunny, with a high near 82. Calm wind becoming southeast around 6 mph in the afternoon. Saturday Night: Mostly cloudy, with a low around 64. Light south wind. Sunday: Partly sunny, with a high near 83. Calm wind becoming southeast 5 to 7 mph in the afternoon. Sunday Night: Mostly cloudy, with a low around 66. South wind around 5 mph becoming calm in the evening. Monday: A chance of showers. Partly sunny, with a high near 82. South wind 3 to 6 mph. Chance of precipitation is 30%. | |
| Merrimac MA 42.84°N 70.99°W (Elev. 98 ft) | |
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