Historical weather data, all-time temperature records, and monthly climate averages for Newton, MA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Newton runs from chilly to surprisingly warm — highs have swung from a frigid 17° in 1995 all the way to a shirtsleeve 77° in 2010. Expect something in between: the average is a cool 54° high and 35° low, with about a 4-in-10 chance of rain and a lingering 8% shot at snow.
Newton's weather has real teeth at both ends of the thermometer — the all-time record high hit a sweltering 103° in June 2025, while February 2023 brought a brutal -11°, a 114-degree range over the station's history. The wettest single day on record dumped 7.15 inches in June 1998, and the Blizzard of '78 still holds the snowiest day mark at 22 inches on February 7th.
Newton is warmest mid-July, when average highs peak around 87°, and coldest in mid-January, when highs barely clear freezing at 35°. Late summer is the wettest stretch — the first two weeks of August average over an inch of precipitation per week. If you're planning a visit, May through September offers the most comfortable conditions, with highs climbing from 70° to a summer peak before easing back down by fall.