Coal Creek, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Coal Creek, a community in Boulder County, Colorado.
Today
43°F
Partly Sunny then Chance Snow Showers
A chance of snow showers after 5pm. Partly sunny. High near 43, with temperatures falling to around 33 in the afternoon. North northeast wind 2 to 6 mph. Chance of precipitation is 40%. New snow accumulation of less than one inch possible.
7-day forecast for Coal Creek
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 43°F | Partly Sunny then Chance Snow Showers | 2 to 6 mph NNE | 35% |
| Tonight | 28°F | Chance Snow Showers then Mostly Cloudy | 3 mph NNW | 35% |
| Thursday | 46°F | Sunny | 0 to 7 mph SE | 0% |
| Thursday Night | 32°F | Partly Cloudy | 1 to 5 mph WSW | 1% |
| Friday | 47°F | Slight Chance Snow Showers | 0 to 7 mph N | 23% |
| Friday Night | 29°F | Slight Chance Snow Showers then Mostly Clear | 1 to 9 mph W | 23% |
| Saturday | 49°F | Sunny | 0 to 15 mph N | 2% |
| Saturday Night | 30°F | Mostly Clear | 1 to 7 mph W | 0% |
| Sunday | 57°F | Sunny | 0 to 13 mph WNW | 0% |
| Sunday Night | 36°F | Mostly Clear | 5 to 12 mph W | 0% |
| Monday | 57°F | Sunny | 0 to 12 mph NW | 0% |
| Monday Night | 35°F | Partly Cloudy | 0 to 6 mph W | 0% |
| Tuesday | 54°F | Mostly Sunny | 0 to 7 mph WNW | 1% |
| Tuesday Night | 35°F | Partly Cloudy | 1 to 7 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Coal Creek (39.905, -105.372). Updated through the day.
Growing snapshot for Coal Creek
Last spring frost
Jun 5
First fall frost
Sep 16
Growing season
103 days
Hardiness zone
5b
More local growing data for Coal Creek: nearby ZIP 80471 weather · frost dates · planting calendar · Colorado frost dates
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Climate data from the nearest NOAA station, Coal Creek Canyon, Co (3.3 mi from Coal Creek). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.