Greenhorn, OR Weather & Growing Conditions
Overnight
26°F
Mostly Clear
Mostly clear, with a low around 26. North wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 26°F | Mostly Clear | 5 mph N | 0% |
| Wednesday | 41°F | Sunny | 2 to 6 mph NW | 0% |
| Wednesday Night | 30°F | Mostly Cloudy then Chance Snow Showers | 2 to 7 mph W | 43% |
| Thursday | 34°F | Chance Snow Showers then Partly Sunny | 2 to 9 mph W | 43% |
| Thursday Night | 25°F | Mostly Clear | 2 to 10 mph SW | 0% |
| Friday | 40°F | Partly Sunny | 2 to 12 mph S | 1% |
| Friday Night | 32°F | Partly Cloudy | 2 to 15 mph SE | 1% |
| Saturday | 43°F | Mostly Sunny | 13 to 18 mph E | 0% |
| Saturday Night | 34°F | Mostly Cloudy | 13 to 22 mph E | 6% |
| Sunday | 42°F | Partly Sunny | 2 to 16 mph NW | 7% |
| Sunday Night | 33°F | Mostly Cloudy | 2 to 14 mph N | 3% |
| Monday | 42°F | Partly Sunny | 3 to 14 mph SE | 5% |
| Monday Night | 34°F | Mostly Cloudy | 3 to 9 mph SW | 12% |
| Tuesday | 43°F | Slight Chance Snow Showers | 5 to 9 mph SW | 17% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Greenhorn, OR
Growing season
74 days
Hardiness zone
6b
Explore more for Greenhorn, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Austin 3 S, Or (12 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.