I-495 MA weather conditions near Merrimac, Massachusetts
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Light Rain Fog/Mist 55°F 2026-09-29T00:54:00-04:00 
Overnight 2026-09-29, Chance Showers and Patchy Fog. A chance of showers. Patchy fog. Otherwise, cloudy, with a low around 51. Northwest wind around 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.Tuesday 2026-09-29, Patchy Fog then Mostly Cloudy. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 68. Northwest wind 3 to 5 mph.
Tuesday Night 2026-09-29, Mostly Cloudy. Mostly cloudy, with a low around 54. Calm wind.
Wednesday 2026-09-30, Partly Sunny. Partly sunny, with a high near 71. Calm wind.- Wednesday Night 2026-09-30, Mostly Cloudy. Mostly cloudy, with a low around 54. Calm wind.
Thursday 2026-10-01, Mostly Sunny. Mostly sunny, with a high near 78. Southwest wind 3 to 6 mph.
Thursday Night 2026-10-01, Partly Cloudy. Partly cloudy, with a low around 65. Southwest wind around 6 mph.- Friday 2026-10-02, Mostly Sunny. Mostly sunny, with a high near 77. West wind around 6 mph.
Friday Night 2026-10-02, Chance Showers then Mostly Cloudy. A chance of showers between 11pm and midnight. Mostly cloudy, with a low around 53. Light northwest wind. Chance of precipitation is 30%.
- Saturday 2026-10-03, Mostly Sunny. Mostly sunny, with a high near 67. North wind around 5 mph becoming northeast in the afternoon.
- Saturday Night 2026-10-03, Partly Cloudy. Partly cloudy, with a low around 47. Calm wind.
Sunday 2026-10-04, Chance Showers. A chance of showers. Partly sunny, with a high near 64. Southeast wind 3 to 6 mph. Chance of precipitation is 40%.- Sunday Night 2026-10-04, Chance Showers. A chance of showers. Mostly cloudy, with a low around 48. Southeast wind around 5 mph becoming light and variable. Chance of precipitation is 40%.
- Monday 2026-10-05, Partly Sunny. Partly sunny, with a high near 66. Northwest wind 6 to 8 mph, with gusts as high as 21 mph.