John Day, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for John Day, a city in Grant County, Oregon.
Today
80°F
Sunny
Sunny. High near 80, with temperatures falling to around 78 in the afternoon. West wind 0 to 5 mph.
7-day forecast for John Day
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Sunny | 0 to 5 mph W | 0% |
| Tonight | 48°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Sunday | 84°F | Sunny | 0 to 5 mph E | 0% |
| Sunday Night | 49°F | Mostly Clear | 1 to 7 mph NE | 0% |
| Monday | 85°F | Sunny | 1 to 6 mph NE | 0% |
| Monday Night | 51°F | Partly Cloudy | 3 mph E | 0% |
| Tuesday | 85°F | Sunny | 1 to 6 mph W | 0% |
| Tuesday Night | 49°F | Mostly Clear | 1 to 6 mph NE | 0% |
| Wednesday | 83°F | Sunny | 2 to 6 mph NE | 1% |
| Wednesday Night | 48°F | Partly Cloudy | 2 to 6 mph NE | 2% |
| Thursday | 83°F | Mostly Sunny | 2 to 7 mph W | 1% |
| Thursday Night | 48°F | Partly Cloudy | 3 to 7 mph NW | 3% |
| Friday | 77°F | Mostly Sunny | 2 to 9 mph SW | 6% |
| Friday Night | 45°F | Mostly Cloudy | 3 to 9 mph N | 8% |
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 Sep 19, 2026.