Belmont, MA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Belmont, a community in Middlesex County, Massachusetts.

Overnight

62°F

Clear

Clear, with a low around 62. West wind around 6 mph.

7-day forecast for Belmont

When	Temp	Forecast	Wind	Precip
Overnight	62°F	Clear	6 mph W	0%
Tuesday	85°F	Sunny	7 mph W	0%
Tuesday Night	63°F	Partly Cloudy	6 mph SW	2%
Wednesday	85°F	Mostly Sunny	3 to 7 mph W	2%
Wednesday Night	68°F	Partly Cloudy	6 mph SW	5%
Thursday	89°F	Mostly Sunny then Slight Chance Rain Showers	5 to 8 mph SW	18%
Thursday Night	73°F	Slight Chance Rain Showers then Partly Cloudy	8 mph SW	23%
Friday	91°F	Mostly Sunny then Slight Chance Rain Showers	6 to 9 mph SW	21%
Friday Night	72°F	Chance Rain Showers	3 to 7 mph W	29%
Saturday	88°F	Mostly Sunny then Chance Rain Showers	3 to 7 mph W	32%
Saturday Night	71°F	Chance Rain Showers	6 mph SW	43%
Sunday	89°F	Mostly Sunny	3 to 8 mph W	12%
Sunday Night	71°F	Mostly Clear	7 mph SW	14%
Monday	90°F	Sunny	5 to 10 mph SW	10%

Forecast source: National Weather Service (api.weather.gov) for Belmont (42.395, -71.180). Updated through the day.

Growing snapshot for Belmont

Last spring frost

Apr 19

First fall frost

Oct 23

Growing season

185 days

Hardiness zone

More local growing data for Belmont: nearby ZIP 02478 weather · frost dates · planting calendar · Massachusetts frost dates

Nearby towns & communities

Arlington Ayer Burlington Cochituate East Pepperell Everett Framingham Groton Hanscom AFB Hopkinton Hudson Lexington Littleton Common Lowell Malden Marlborough Maynard Medford Melrose Newton Pepperell Pinehurst Reading Shirley Somerville Stoneham Townsend Wakefield Waltham Watertown Town

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Climate data from the nearest NOAA station, Jamaica Plain, Ma (7 mi from Belmont). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.