Granby, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Granby, a community in Hampshire County, Massachusetts.
Overnight
48°F
Partly Cloudy
Partly cloudy, with a low around 48. South wind around 3 mph.
7-day forecast for Granby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Partly Cloudy | 3 mph S | 2% |
| Wednesday | 74°F | Sunny | 3 to 12 mph S | 2% |
| Wednesday Night | 55°F | Partly Cloudy | 5 to 8 mph S | 1% |
| Thursday | 71°F | Chance Light Rain | 7 to 12 mph S | 36% |
| Thursday Night | 60°F | Light Rain Likely | 3 to 10 mph S | 71% |
| Friday | 69°F | Light Rain | 3 mph S | 76% |
| Friday Night | 53°F | Light Rain | 3 mph NE | 76% |
| Saturday | 64°F | Chance Light Rain | 3 to 7 mph N | 37% |
| Saturday Night | 43°F | Chance Light Rain | 7 mph NW | 29% |
| Sunday | 57°F | Slight Chance Light Rain then Mostly Sunny | 6 to 9 mph NW | 21% |
| Sunday Night | 35°F | Partly Cloudy | 5 mph W | 8% |
| Monday | 54°F | Slight Chance Light Rain | 5 to 13 mph W | 15% |
| Monday Night | 32°F | Partly Cloudy | 5 to 8 mph W | 12% |
| Tuesday | 58°F | Mostly Sunny | 5 to 12 mph SW | 6% |
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.