Weather WorldCharleston, UT Weather Forecast
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Charleston Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SUNDAY |
 |  |  |  |  |  | |  | | | |
| Partly Cloudy | Mostly Cloudy | Thunderstorms | Chance of T-Storm | Sunny | Mostly Clear | Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Hi: 75°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C | Lo: 40°FLo: 4°C | Hi: 75°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 79°FHi: 26°C | Hi: 79°FHi: 26°C Lo: 49°FLo: 9°C | Hi: 79°FHi: 26°C Lo: 49°FLo: 9°C | Hi: 79°FHi: 26°C Lo: 49°FLo: 9°C | Hi: 79°FHi: 26°C Lo: 49°FLo: 9°C |
| POP: 70% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1243 AM MDT Mon Sep 21 2026 
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Issued: 1036 PM MDT Sun Sep 20 2026
Key Messages
- High pressure will keep conditions dry and stable across Utah and southwest Wyoming through Monday afternoon with temperatures near seasonal normals.
- A Pacific trough will bring showers and thunderstorms to southwest Utah beginning Monday night, with the potential for convection spreading across the remainder of the forecast area during the day Tuesday. Any storms that develop could produce gusty winds, lightning, hail, and heavy rain that could lead to isolated flash flooding.
- Dry c...