Granby, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Granby, a community in Hampshire County, Massachusetts.
Tonight
46°F
Mostly Cloudy
Mostly cloudy, with a low around 46. South wind around 5 mph.
7-day forecast for Granby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Mostly Cloudy | 5 mph S | 3% |
| Wednesday | 74°F | Sunny | 2 to 10 mph S | 4% |
| Wednesday Night | 53°F | Partly Cloudy | 5 to 8 mph S | 2% |
| Thursday | 71°F | Chance Light Rain | 6 to 12 mph S | 52% |
| Thursday Night | 61°F | Light Rain Likely | 2 to 9 mph S | 71% |
| Friday | 68°F | Light Rain | 5 mph S | 77% |
| Friday Night | 54°F | Rain | 6 mph NW | 77% |
| Saturday | 64°F | Light Rain Likely | 7 mph NW | 59% |
| Saturday Night | 41°F | Chance Light Rain | 6 mph NW | 37% |
| Sunday | 59°F | Slight Chance Light Rain then Mostly Sunny | 6 to 9 mph W | 23% |
| Sunday Night | 35°F | Partly Cloudy | 5 mph W | 8% |
| Monday | 57°F | Slight Chance Light Rain | 3 to 13 mph NW | 22% |
| Monday Night | 33°F | Slight Chance Light Rain | 8 mph W | 21% |
| Tuesday | 58°F | Mostly Sunny | 8 to 14 mph SW | 11% |
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 Nov 4, 2026.