Tri-Arc, UT Weather Forecast
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Tri-Arc Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
| Partly Cloudy | Rain Showers | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers | Showers Likely | Chance of Showers |
| Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 59°FHi: 15°C | Lo: 41°FLo: 5°C | Hi: 59°FHi: 15°C | Lo: 40°FLo: 4°C |
| POP: 20% | POP: 70% | POP: 80% | POP: 90% | POP: 90% | POP: 80% | POP: 90% | POP: 90% | POP: 80% | POP: 60% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1242 AM MDT Fri Oct 09 2026 

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Issued: 553 AM MDT Fri Oct 9 2026
Key Messages
.KEY MESSAGES, Issued 1001 PM MDT Thu Oct 8 2026...- Widespread moderate to heavy rainfall threat increases late Saturday through Sunday as a remnant tropical system and associated deep moisture lift through and interact with an approaching trough. Widespread water amounts of 1 to 3 inches are forecast, with locally higher amounts in excess of 3 inches possible, particularly in high terrain and areas along and northwest of the circulation track.
- There is also a wind threat associated ...
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