Historical weather data, all-time temperature records, and monthly climate averages for Weymouth, MA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Weymouth sits in that classic New England in-between zone — expect a high near 53° and a low around 35°, with a 1-in-3 chance of rain. The date has swung wildly over 65 years of records, from a balmy 74° in 1991 to a bone-chilling 19° in 1995. There's a slim 6% chance of snow, but don't rule it out entirely.
Weymouth weather doesn't mess around at the extremes — the thermometer has hit 101° in July 2011 and plunged to -13° in January 1961, a 114-degree swing in the historical record. The most dramatic single day on record was March 15, 2026, when 9 inches of rain fell, while the Blizzard of '78 dumped 24 inches of snow on February 7, 1978.
Summer is the sweet spot, with highs peaking around 84° during the week of July 16–22, while mid-January bottoms out at a frigid 36°. Spring is the wettest stretch — the week of March 12–18 averages 1.36 inches of precipitation, so pack accordingly. If you want warmth without the crowds, late August and September offer highs in the 73–80° range as the summer rush winds down.