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Ketchum Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
 |  | |  |  |  | | |  | | | |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Partly Cloudy | Mostly Sunny | Partly Cloudy | Sunny | Clear | Sunny | Clear | Sunny |
| Lo: 69°FLo: 21°C | Hi: 75°FHi: 24°C | Lo: 61°FLo: 16°C | Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C |
| POP: 70% | POP: 90% | POP: 70% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 553 PM CDT Wed Sep 30 2026 
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Issued: 636 PM CDT Wed Sep 30 2026
Key Messages
Updated at 636 PM CDT Wed Sep 30 2026- Shower and storms chances drastically increase west to east this evening for eastern Oklahoma and late tonight into Thursday morning for northwest Arkansas.
- Several periods of a heavy rain as well as limited severe weather potential exists this evening/tonight and Thursday. Heavy rain potential tapers off during the day Friday.
- A cold frontal passage overnight Thursday night will cause temperatures to become more fall-like starting Friday.