Weather in Merrimac, MA
Updated 2026-08-11 11:15 local time · ZIP codes 01860
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
85°3% rain86°3% rain87°2% rain87°2% rain91°1% rain90°0% rain88°1% rain86°1% rain
82°2% rain
78°2% rain75°1% rain75°2% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 3%).
It feels like 87°F with winds near 11 mph.
78°F, 2% rain chance and 4 mph wind.
Visibility is around 6 mi; gusts may reach 13 mph.
Current temperature is 85°F, wind 11 mph, rain chance up to 3%.
UV index is 6. Sunscreen and sunglasses are sensible for longer outdoor time.
Merrimac weather today
Sunny and 85°F in Merrimac, MA. Today's high is 91°F with a 3% rain chance. Winds are around 11 mph with gusts near 12 mph. Relative humidity is 54%, pressure is 29.79 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Merrimac
Sunrise is at 05:46 AM and sunset is at 07:52 PM. Tomorrow's forecast calls for Sunny with a high near 85°F and a low near 63°F. The maximum rain chance is 3%.