Granby, MA Weather & Growing Conditions
Tonight
46°F
Partly Cloudy
Partly cloudy, with a low around 46. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Partly Cloudy | 5 mph S | 3% |
| Wednesday | 74°F | Sunny | 3 to 10 mph S | 4% |
| Wednesday Night | 54°F | Partly Cloudy | 8 mph S | 2% |
| Thursday | 71°F | Chance Light Rain | 6 to 12 mph S | 50% |
| Thursday Night | 61°F | Light Rain Likely | 3 to 9 mph S | 72% |
| Friday | 68°F | Light Rain | 5 mph SW | 78% |
| Friday Night | 55°F | Rain | 6 mph NW | 78% |
| Saturday | 64°F | Light Rain Likely | 8 mph NW | 60% |
| Saturday Night | 42°F | Chance Light Rain | 6 mph NW | 37% |
| Sunday | 59°F | Slight Chance Light Rain then Mostly Sunny | 5 to 9 mph W | 23% |
| Sunday Night | 35°F | Partly Cloudy | 6 mph W | 8% |
| Monday | 57°F | Slight Chance Light Rain | 3 to 14 mph W | 22% |
| Monday Night | 34°F | Slight Chance Light Rain | 8 mph W | 21% |
| Tuesday | 58°F | Mostly Sunny | 7 to 14 mph SW | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Granby, MA
Last spring frost
May 3
First fall frost
Oct 14
Growing season
164 days
Hardiness zone
6a
Explore more for Granby, MA: full frost dates · planting calendar · Massachusetts frost dates
Climate data from the nearest NOAA station, Belchertown, Ma (8.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.