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Sunnyside Weather Forecast
| TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | THURSDAY NIGHT |
 |  | | | |  | | |  |  | | |
| Mostly Clear | Chance of T-Storm | Mostly Clear | Chance of T-Storm | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear |
| Lo: 55°FLo: 13°C | Hi: 89°FHi: 32°C | Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C | Lo: 55°FLo: 13°C | Hi: 80°FHi: 27°C | Hi: 80°FHi: 27°C Lo: 51°FLo: 11°C | Hi: 80°FHi: 27°C Lo: 51°FLo: 11°C | Hi: 80°FHi: 27°C Lo: 51°FLo: 11°C | Hi: 80°FHi: 27°C Lo: 51°FLo: 11°C | Hi: 80°FHi: 27°C Lo: 51°FLo: 11°C | Hi: 80°FHi: 27°C Lo: 51°FLo: 11°C |
| POP: 20% | POP: 10% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1246 PM MDT Fri Sep 11 2026 
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Issued: 225 PM MDT Fri Sep 11 2026
Key Messages
- A marginal risk (level 1/4) for excessive rainfall is in place across portions of southern Utah through Sunday.
- A cold front is expected to move through northern Utah and southwest Wyoming Sunday evening through Monday morning, bringing below average temperatures in the northern area with little change in the south.
Discussion
...While an increase in moisture is noted across the central and southern portions of Utah this afternoon, the coverage of showers and thunderstorms is rather di...