Bonanza, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bonanza, a town in Saguache County, Colorado.
Overnight
50°F
Patchy Smoke
Patchy smoke. Mostly clear, with a low around 50. North wind around 10 mph.
7-day forecast for Bonanza
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Patchy Smoke | 10 mph N | 1% |
| Tuesday | 69°F | Patchy Smoke | 5 to 10 mph SW | 23% |
| Tuesday Night | 50°F | Patchy Smoke then Mostly Clear | 5 to 10 mph SW | 7% |
| Wednesday | 75°F | Sunny | 5 to 20 mph W | 0% |
| Wednesday Night | 49°F | Mostly Clear | 5 to 15 mph NW | 1% |
| Thursday | 76°F | Sunny | 5 to 15 mph W | 1% |
| Thursday Night | 50°F | Mostly Clear | 5 to 15 mph NNW | 0% |
| Friday | 76°F | Sunny | 5 to 10 mph S | 1% |
| Friday Night | 51°F | Partly Cloudy | 10 mph NNW | 2% |
| Saturday | 76°F | Sunny then Slight Chance Showers And Thunderstorms | 5 mph S | 15% |
| Saturday Night | 52°F | Partly Cloudy | 10 mph NNW | 1% |
| Sunday | 75°F | Sunny then Slight Chance Showers And Thunderstorms | 5 mph NNW | 15% |
| Sunday Night | 51°F | Mostly Cloudy | 10 mph NW | 8% |
| Monday | 75°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph NW | 38% |
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 Aug 4, 2026.