Keystone, CO Weather & Growing Conditions
This Afternoon
32°F
Sunny
Sunny. High near 32, with temperatures falling to around 27 in the afternoon. West northwest wind around 8 mph, with gusts as high as 16 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 32°F | Sunny | 8 mph WNW | 0% |
| Tonight | 21°F | Mostly Clear | 3 to 7 mph WSW | 0% |
| Wednesday | 35°F | Snow Showers Likely | 3 to 10 mph SE | 68% |
| Wednesday Night | 20°F | Snow Showers then Mostly Cloudy | 3 to 9 mph N | 83% |
| Thursday | 36°F | Sunny | 2 to 7 mph WSW | 1% |
| Thursday Night | 23°F | Partly Cloudy | 2 to 7 mph SW | 2% |
| Friday | 34°F | Chance Snow Showers | 3 to 9 mph WNW | 26% |
| Friday Night | 21°F | Chance Snow Showers | 7 mph NW | 26% |
| Saturday | 38°F | Sunny | 7 mph NW | 6% |
| Saturday Night | 23°F | Clear | 6 mph WNW | 2% |
| Sunday | 45°F | Sunny | 5 to 9 mph WNW | 0% |
| Sunday Night | 27°F | Mostly Clear | 7 mph WNW | 0% |
| Monday | 43°F | Mostly Sunny | 6 mph NW | 1% |
| Monday Night | 28°F | Partly Cloudy | 6 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Keystone, CO
Growing season
41 days
Hardiness zone
5a
Explore more for Keystone, CO: full frost dates · planting calendar · Colorado frost dates
Climate data from the nearest NOAA station, Dillon 1 E, Co (6.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.