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Keystone Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
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| Windy | Windy | Isolated Showers | Rain Showers | Rain Showers | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Clearing | Chance of Showers | Mostly Sunny | Partly Cloudy |
| Hi: 85°FHi: 29°C | Lo: 49°FLo: 9°C | Hi: 59°FHi: 15°C | Lo: 35°FLo: 2°C | Hi: 51°FHi: 11°C | Lo: 39°FLo: 4°C | Hi: 55°FHi: 13°C | Lo: 31°FLo: -1°C | Hi: 60°FHi: 16°C | Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C | Lo: 35°FLo: 2°C |
| POP: 50% | POP: 80% | POP: 100% | POP: 100% | POP: 80% | POP: 30% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1236 AM MDT Fri Oct 23 2026 
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Issued: 627 AM CDT Fri Oct 23 2026
Key Messages
-Well above-normal temperatures are expected Friday, with highs in the upper 70s to middle 80s. Strong southerly winds are also expected, with gusts up to 50 mph possible.
-Rainfall chances increase Friday evening into Saturday, with more widespread rainfall expected Saturday. Locally heavy rainfall and isolated thunderstorms will be possible.- Moderate to high confidence in cooler conditions along with rainfall through early week.
- Moderate confidence in a return to drier and warmer te...