Bonanza, OR Weather & Growing Conditions
Overnight
28°F
Partly Cloudy
Partly cloudy. Low around 28, with temperatures rising to around 30 overnight. East wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 28°F | Partly Cloudy | 3 mph E | 0% |
| Wednesday | 50°F | Mostly Sunny | 5 mph SSE | 2% |
| Wednesday Night | 29°F | Mostly Cloudy | 5 mph N | 2% |
| Thursday | 52°F | Sunny | 3 mph W | 0% |
| Thursday Night | 27°F | Mostly Clear | 1 to 5 mph NE | 0% |
| Friday | 59°F | Mostly Sunny | 1 to 5 mph ESE | 0% |
| Friday Night | 31°F | Mostly Clear | 1 to 5 mph E | 0% |
| Saturday | 64°F | Mostly Sunny | 2 to 12 mph SE | 0% |
| Saturday Night | 32°F | Partly Cloudy | 5 to 9 mph SSE | 1% |
| Sunday | 58°F | Partly Sunny | 5 mph SSW | 1% |
| Sunday Night | 31°F | Mostly Cloudy | 5 mph ENE | 0% |
| Monday | 57°F | Mostly Cloudy | 6 mph S | 3% |
| Monday Night | 30°F | Partly Cloudy | 0 to 3 mph SE | 5% |
| Tuesday | 58°F | Mostly Sunny | 2 to 8 mph SSE | 10% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Bonanza, OR
Last spring frost
May 31
First fall frost
Sep 21
Growing season
114 days
Hardiness zone
6b
Explore more for Bonanza, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Gerber Dam, Or (9.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.