Belmont, MA Weather & Growing Conditions
Overnight
62°F
Clear
Clear, with a low around 62. West wind around 6 mph.
7-day forecast
| 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). Updated through the day.
Growing snapshot for Belmont, MA
Last spring frost
Apr 19
First fall frost
Oct 23
Growing season
185 days
Hardiness zone
6b
Explore more for Belmont, MA: full frost dates · planting calendar · Massachusetts frost dates
Climate data from the nearest NOAA station, Jamaica Plain, Ma (7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.