Granby, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Granby, a community in Hampshire County, Massachusetts.
Today
83°F
Sunny
Sunny, with a high near 83. Southwest wind 1 to 5 mph.
7-day forecast for Granby
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 1 to 5 mph SW | 0% |
| Tonight | 58°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Wednesday | 83°F | Partly Sunny | 0 to 7 mph SW | 1% |
| Wednesday Night | 64°F | Partly Cloudy | 2 to 6 mph S | 14% |
| Thursday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 9 mph S | 41% |
| Thursday Night | 69°F | Chance Showers And Thunderstorms | 3 to 8 mph S | 54% |
| Friday | 87°F | Mostly Sunny then Chance Rain Showers | 2 to 8 mph SW | 29% |
| Friday Night | 68°F | Chance Showers And Thunderstorms | 1 to 6 mph W | 40% |
| Saturday | 85°F | Mostly Sunny then Chance Rain Showers | 1 to 7 mph W | 29% |
| Saturday Night | 66°F | Chance Rain Showers then Mostly Cloudy | 1 to 5 mph SW | 38% |
| Sunday | 86°F | Mostly Sunny | 1 to 8 mph SW | 13% |
| Sunday Night | 66°F | Slight Chance Rain Showers then Mostly Clear | 2 to 6 mph SW | 16% |
| Monday | 87°F | Mostly Sunny | 2 to 12 mph SW | 12% |
| Monday Night | 65°F | Partly Cloudy | 8 mph W | 14% |
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 Aug 4, 2026.