O'Brien, OR Weather & Growing Conditions
Today
104°F
Areas Of Smoke
Areas of smoke before 2pm. Sunny, with a high near 104. North wind 3 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 104°F | Areas Of Smoke | 3 to 8 mph N | 0% |
| Tonight | 60°F | Areas Of Smoke | 2 to 8 mph N | 0% |
| Wednesday | 104°F | Sunny | 1 to 10 mph NNE | 0% |
| Wednesday Night | 60°F | Clear | 0 to 10 mph W | 0% |
| Thursday | 101°F | Sunny | 0 to 7 mph WNW | 0% |
| Thursday Night | 58°F | Clear | 0 to 7 mph NW | 0% |
| Friday | 101°F | Sunny | 0 to 7 mph N | 0% |
| Friday Night | 58°F | Clear | 1 to 7 mph NNE | 0% |
| Saturday | 96°F | Sunny | 1 to 9 mph NNE | 0% |
| Saturday Night | 54°F | Clear | 2 to 9 mph NNE | 0% |
| Sunday | 91°F | Sunny | 2 to 13 mph NNE | 0% |
| Sunday Night | 51°F | Clear | 3 to 14 mph NNE | 0% |
| Monday | 89°F | Sunny | 3 to 12 mph NNE | 0% |
| Monday Night | 50°F | Clear | 1 to 12 mph NNE | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for O'Brien, OR
Last spring frost
May 1
First fall frost
Oct 12
Growing season
161 days
Hardiness zone
8b
Explore more for O'Brien, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Cave Junction 1 Wnw, Or (3.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.