St Marks, UT Weather Forecast
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St Marks Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
| Sunny | Mostly Clear | Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear |
| Hi: 80°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C | Lo: 60°FLo: 16°C | Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C Lo: 60°FLo: 16°C | Hi: 85°FHi: 29°C Lo: 60°FLo: 16°C | Hi: 81°FHi: 27°C Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C Lo: 59°FLo: 15°C | Hi: 80°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 80°FHi: 27°C Lo: 55°FLo: 13°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1244 AM MDT Thu Oct 01 2026 

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Issued: 539 AM MDT Thu Oct 1 2026
Key Messages
.KEY MESSAGES, Issued 934 PM MDT Wed Sep 30 2026...- High pressure is favored to persist, bringing correspondingly dry and mild conditions through the first week of October.
- There is a low (~20-30%) chance of a weak passing system early next week to bring isolated showers to portions of the area.
Discussion
, Issued 934 PM MDT Wed Sep 30 2026... Evening water vapor analysis shows a mid to upper level low ejecting from New Mexico into the south/central Plains. Moisture wrapping around th...
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