Granby, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Granby, a community in Hampshire County, Massachusetts.
Tonight
44°F
Partly Cloudy
Partly cloudy, with a low around 44. North wind 6 to 9 mph.
7-day forecast for Granby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 44°F | Partly Cloudy | 6 to 9 mph N | 0% |
| Saturday | 67°F | Mostly Sunny | 2 to 6 mph N | 0% |
| Saturday Night | 43°F | Partly Cloudy | 2 mph SE | 4% |
| Sunday | 63°F | Rain Showers | 1 to 7 mph SE | 91% |
| Sunday Night | 52°F | Rain Showers | 5 to 12 mph E | 89% |
| Monday | 66°F | Slight Chance Rain Showers then Partly Sunny | 8 to 12 mph N | 16% |
| Monday Night | 47°F | Partly Cloudy | 6 to 9 mph N | 6% |
| Tuesday | 62°F | Partly Sunny | 10 mph NE | 11% |
| Tuesday Night | 45°F | Mostly Cloudy | 6 to 12 mph NE | 5% |
| Wednesday | 62°F | Partly Sunny | 12 to 15 mph NE | 9% |
| Wednesday Night | 46°F | Mostly Cloudy then Slight Chance Rain Showers | 9 to 13 mph NE | 23% |
| Thursday | 61°F | Chance Rain Showers | 15 mph NE | 27% |
| Thursday Night | 47°F | Chance Rain Showers | 9 to 13 mph NE | 32% |
| Friday | 66°F | Chance Rain Showers | 14 mph N | 28% |
Forecast source: National Weather Service (api.weather.gov) for Granby (42.266, -72.529). Updated through the day.
Growing snapshot for Granby
Last spring frost
May 3
First fall frost
Oct 14
Growing season
164 days
Hardiness zone
6a
More local growing data for Granby: nearby ZIP 01033 weather · frost dates · planting calendar · Massachusetts frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Belchertown, Ma (8.1 mi from Granby). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.