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John Day Weather Forecast
| REST OF TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  | |  |  |  | | |  |  | | |
| Sunny | Mostly Clear | Sunny | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Partly Cloudy |
| Hi: 83°FHi: 28°C | Lo: 53°FLo: 12°C | Hi: 85°FHi: 29°C | Lo: 53°FLo: 12°C | Hi: 76°FHi: 24°C | Hi: 79°FHi: 26°C Lo: 46°FLo: 8°C | Hi: 79°FHi: 26°C Lo: 46°FLo: 8°C | Hi: 79°FHi: 26°C Lo: 46°FLo: 8°C | Hi: 70°FHi: 21°C Lo: 49°FLo: 9°C | Hi: 70°FHi: 21°C Lo: 49°FLo: 9°C | Lo: 40°FLo: 4°C | Hi: 56°FHi: 13°C |
| POP: 40% | POP: 40% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1023 AM PDT Sun Sep 20 2026 
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Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1048 AM PDT Sun Sep 20 2026
Key Messages
- Warming trend through Monday with highs in the low to mid 80s in the lower elevations. Cooler temperatures towards the mid to late week.
- Next possible weather system pushing towards the end of the week, with chances of mountain showers going up.
- Light diurnal winds prevail, with the exception of breezy winds in the Cascade gaps Tuesday and Wednesday.
Discussion
... Zonal/slight ridging continues to prevail the area, continuing the dry and clear pattern and will continue to do so throug...