Bonanza Mountain Estates, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bonanza Mountain Estates, a community in Boulder County, Colorado.
Overnight
28°F
Mostly Cloudy
Mostly cloudy, with a low around 28. West wind around 2 mph.
7-day forecast for Bonanza Mountain Estates
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 28°F | Mostly Cloudy | 2 mph W | 0% |
| Wednesday | 46°F | Partly Sunny then Chance Snow Showers | 0 to 6 mph NE | 35% |
| Wednesday Night | 28°F | Chance Snow Showers then Mostly Cloudy | 2 mph NW | 35% |
| Thursday | 49°F | Sunny | 0 to 5 mph E | 0% |
| Thursday Night | 31°F | Mostly Cloudy | 2 mph W | 3% |
| Friday | 49°F | Chance Rain And Snow Showers | 0 to 3 mph NW | 25% |
| Friday Night | 28°F | Chance Rain And Snow Showers then Mostly Clear | 0 to 5 mph W | 25% |
| Saturday | 51°F | Sunny | 0 to 7 mph NNW | 2% |
| Saturday Night | 30°F | Mostly Clear | 3 mph W | 0% |
| Sunday | 59°F | Sunny | 1 to 7 mph W | 0% |
| Sunday Night | 35°F | Mostly Clear | 7 mph W | 0% |
| Monday | 59°F | Sunny | 0 to 6 mph WNW | 0% |
| Monday Night | 35°F | Partly Cloudy | 0 to 3 mph W | 0% |
| Tuesday | 56°F | Mostly Sunny | 2 to 6 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Bonanza Mountain Estates (39.977, -105.480). Updated through the day.
Growing snapshot for Bonanza Mountain Estates
Last spring frost
Jun 21
First fall frost
Sep 2
Growing season
71 days
Hardiness zone
5b
More local growing data for Bonanza Mountain Estates: nearby ZIP 80466 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Allenspark
Altona
Bark Ranch
Boulder
Coal Creek
Crisman
Eldorado Springs
Glendale
Gold Hill
Gunbarrel
Hidden Lake
Jamestown
Lafayette
Lazy Acres
Leyner
Longmont
Louisville
Lyons
Mountain Meadows
Nederland
Niwot
Paragon Estates
Pine Brook Hill
Seven Hills
St. Ann Highlands
Sugarloaf
Sunshine
Superior
Tall Timber
Valmont
Climate data from the nearest NOAA station, Boulder 14 W, Co (3.3 mi from Bonanza Mountain Estates). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.