Granby, CO Weather & Growing Conditions
Today
81°F
Patchy Smoke
Patchy smoke. Sunny. High near 81, with temperatures falling to around 79 in the afternoon. Southwest wind 2 to 14 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Patchy Smoke | 2 to 14 mph SW | 6% |
| Tonight | 42°F | Patchy Smoke | 1 to 10 mph E | 6% |
| Wednesday | 80°F | Sunny | 1 to 16 mph WSW | 0% |
| Wednesday Night | 40°F | Patchy Smoke then Mostly Clear | 1 to 15 mph NNW | 0% |
| Thursday | 83°F | Sunny | 1 to 15 mph W | 0% |
| Thursday Night | 43°F | Clear | 1 to 13 mph NE | 0% |
| Friday | 85°F | Sunny | 1 to 13 mph WSW | 0% |
| Friday Night | 47°F | Mostly Clear | 2 to 12 mph ENE | 0% |
| Saturday | 85°F | Sunny | 1 to 12 mph W | 0% |
| Saturday Night | 49°F | Partly Cloudy | 2 to 9 mph ENE | 0% |
| Sunday | 86°F | Sunny | 1 to 12 mph WSW | 4% |
| Sunday Night | 48°F | Partly Cloudy | 1 to 10 mph NE | 7% |
| Monday | 85°F | Mostly Sunny then Chance Showers And Thunderstorms | 1 to 10 mph SW | 29% |
| Monday Night | 47°F | Chance Showers And Thunderstorms then Mostly Cloudy | 1 to 9 mph E | 32% |
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 Aug 4, 2026.