John Day, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for John Day, a city in Grant County, Oregon.
Overnight
47°F
Areas Of Smoke
Areas of smoke. Mostly clear. Low around 47, with temperatures rising to around 49 overnight. Southeast wind around 2 mph.
7-day forecast for John Day
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 47°F | Areas Of Smoke | 2 mph SE | 0% |
| Tuesday | 90°F | Areas Of Smoke | 0 to 7 mph NW | 0% |
| Tuesday Night | 53°F | Areas Of Smoke | 2 to 7 mph NE | 0% |
| Wednesday | 98°F | Areas Of Smoke | 2 to 7 mph N | 0% |
| Wednesday Night | 57°F | Areas Of Smoke then Mostly Clear | 1 to 7 mph N | 0% |
| Thursday | 103°F | Sunny | 2 to 8 mph W | 0% |
| Thursday Night | 60°F | Mostly Clear | 2 to 8 mph NW | 0% |
| Friday | 100°F | Sunny | 2 to 12 mph SW | 0% |
| Friday Night | 58°F | Mostly Clear | 1 to 12 mph NE | 0% |
| Saturday | 97°F | Sunny | 1 to 13 mph NE | 0% |
| Saturday Night | 56°F | Mostly Clear | 1 to 13 mph N | 0% |
| Sunday | 92°F | Sunny | 1 to 12 mph NW | 0% |
| Sunday Night | 53°F | Mostly Clear | 1 to 12 mph N | 0% |
| Monday | 90°F | Sunny | 1 to 10 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for John Day (44.418, -118.956). Updated through the day.
Growing snapshot for John Day
Last spring frost
May 28
First fall frost
Sep 18
Growing season
113 days
Hardiness zone
6b
More local growing data for John Day: nearby ZIP 97845 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, John Day, Or (2.8 mi from John Day). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.