Bonanza, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bonanza, a town in Saguache County, Colorado.
Overnight
25°F
Partly Cloudy
Partly cloudy, with a low around 25. Southwest wind around 5 mph.
7-day forecast for Bonanza
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 25°F | Partly Cloudy | 5 mph SW | 0% |
| Wednesday | 37°F | Mostly Sunny then Slight Chance Snow Showers | 5 to 10 mph SSW | 64% |
| Wednesday Night | 23°F | Snow Showers Likely | 5 to 10 mph NW | 64% |
| Thursday | 38°F | Sunny | 0 to 10 mph SE | 6% |
| Thursday Night | 26°F | Mostly Cloudy | 0 to 5 mph WSW | 0% |
| Friday | 38°F | Mostly Sunny | 5 mph WSW | 12% |
| Friday Night | 23°F | Partly Cloudy | 5 to 10 mph WNW | 12% |
| Saturday | 40°F | Sunny | 0 to 10 mph WNW | 4% |
| Saturday Night | 26°F | Mostly Clear | 5 mph NW | 0% |
| Sunday | 45°F | Sunny | 5 mph W | 0% |
| Sunday Night | 28°F | Mostly Clear | 5 to 10 mph W | 0% |
| Monday | 46°F | Sunny | 0 to 5 mph W | 0% |
| Monday Night | 29°F | Partly Cloudy | 5 mph WNW | 1% |
| Tuesday | 44°F | Mostly Sunny | 5 mph W | 2% |
Forecast source: National Weather Service (api.weather.gov) for Bonanza (38.297, -106.142). Updated through the day.
Growing snapshot for Bonanza
Last spring frost
May 16
First fall frost
Sep 28
Growing season
135 days
Hardiness zone
5b
More local growing data for Bonanza: nearby ZIP 81155 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Saguache, Co (14.5 mi from Bonanza). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.