Greenhorn, OR Weather & Growing Conditions
This Afternoon
58°F
Mostly Sunny
Mostly sunny, with a high near 58. North wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 58°F | Mostly Sunny | 7 mph N | 1% |
| Tonight | 46°F | Partly Cloudy | 6 mph SE | 1% |
| Sunday | 63°F | Sunny | 2 to 8 mph S | 1% |
| Sunday Night | 49°F | Mostly Clear | 2 to 10 mph SE | 0% |
| Monday | 64°F | Sunny | 5 to 10 mph SE | 1% |
| Monday Night | 50°F | Partly Cloudy | 5 mph NE | 0% |
| Tuesday | 63°F | Sunny | 3 to 8 mph SE | 4% |
| Tuesday Night | 44°F | Partly Cloudy | 7 mph NW | 4% |
| Wednesday | 58°F | Mostly Sunny | 5 to 8 mph W | 1% |
| Wednesday Night | 43°F | Partly Cloudy | 7 mph N | 3% |
| Thursday | 60°F | Mostly Sunny | 8 mph SE | 1% |
| Thursday Night | 44°F | Partly Cloudy | 6 to 9 mph NE | 6% |
| Friday | 55°F | Mostly Sunny | 10 mph S | 9% |
| Friday Night | 38°F | Mostly Cloudy | 9 mph NW | 10% |
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 Sep 20, 2026.