Merrimac, MA Weather Forecast
Essex County, Massachusetts
Live radar, warnings and storm tracking for Merrimac, with free alerts the moment it counts.
The next few hours
A dry morning, partly cloudy
It is 32°, but the wind is taking it down to 28° on exposed skin. The sky is partly cloudy. The air is close to calm.
The wind turns to the northwest around 10 AM. Nothing in the next day and a half is wet enough to move plans for.
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Quiet through the next day and a half
Nothing wet is expected over the next day and a half.
The overnight low settles near 28°. Tomorrow tops out near 50°.
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
28–61°F across the weekThe week runs between 28° and 61°, with Friday the warmest day of it. The second half leans warming, and today is the coolest day in it. Every day in the outlook stays dry.
Free alerts for Merrimac
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Merrimac, MA at a glance
Merrimac is home to about 6,718 people in Essex County, across 8.5 square miles. It ranks 224th by population of 283 places in Massachusetts with a forecast here. The nearest neighbour with its own forecast is Newton, 3 miles away.
- County
- Essex County
- Population
- 6,718 2023 est.
- Land area
- 8.5 sq mi
- People per sq mi
- 790
- Forecast point
- 42.8386°N, 71.0120°W
How well can the network see Merrimac?
The nearest Doppler radar is KBOX (Boston, MA), to the S. Its lowest scan passes about 4,700 ft above Merrimac. The beam is above the lowest few thousand feet here, so a warning for Merrimac can come before anything looks dramatic on radar.
The closest weather station is KLWM (Lawrence Muni). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near Merrimac
- Newton, NH3 mi
- Amesbury Town, MA3 mi
- West Newbury, MA4 mi
- Plaistow, NH4 mi
- Haverhill, MA5 mi
- Groveland, MA6 mi
- Kingston, NH6 mi
- Newburyport, MA7 mi
Elsewhere in Massachusetts
BostonWorcesterSpringfieldCambridgeLowellBrocktonAll Massachusetts forecasts →

