Granby, CO Weather & Growing Conditions
Today
52°F
Slight Chance Snow Showers
A slight chance of snow showers between 11am and 2pm, then a chance of rain and snow showers. Mostly cloudy. High near 52, with temperatures falling to around 43 in the afternoon. East wind 0 to 7 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 52°F | Slight Chance Snow Showers | 0 to 7 mph E | 32% |
| Tonight | 19°F | Chance Snow Showers then Mostly Cloudy | 0 to 5 mph NNE | 32% |
| Thursday | 52°F | Sunny | 0 to 5 mph NNW | 0% |
| Thursday Night | 21°F | Mostly Cloudy | 0 to 3 mph ESE | 3% |
| Friday | 50°F | Slight Chance Snow Showers | 0 to 7 mph W | 21% |
| Friday Night | 17°F | Slight Chance Rain And Snow Showers then Partly Cloudy | 0 to 3 mph NW | 21% |
| Saturday | 51°F | Sunny | 0 to 6 mph WNW | 1% |
| Saturday Night | 18°F | Mostly Clear | 2 mph N | 0% |
| Sunday | 56°F | Sunny | 0 to 8 mph WNW | 0% |
| Sunday Night | 22°F | Mostly Clear | 2 mph W | 0% |
| Monday | 58°F | Sunny | 0 to 3 mph WSW | 0% |
| Monday Night | 24°F | Partly Cloudy | 1 mph NE | 0% |
| Tuesday | 54°F | Mostly Sunny | 0 to 8 mph W | 2% |
| Tuesday Night | 24°F | Partly Cloudy | 2 mph NW | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Granby, CO
Last spring frost
Jun 13
First fall frost
Sep 7
Growing season
84 days
Hardiness zone
5a
Explore more for Granby, CO: full frost dates · planting calendar · Colorado frost dates
Climate data from the nearest NOAA station, Grand Lake 6 Ssw, Co (3.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.