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City of Casper, WyomingCasper, WY Weather Forecast
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| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 | |  |  |  |  |  | | |  | | |
| Windy | Windy | Partly Cloudy | Partly Cloudy | Mostly Cloudy | Chance of Showers | Mostly Clear | Clearing | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny |
| Lo: 59°FLo: 15°C | Hi: 80°FHi: 27°C | Lo: 51°FLo: 11°C | Hi: 80°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 80°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 80°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C |
| POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 732 PM MDT Sat Aug 29 2026 
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Issued: 958 PM MDT Sat Aug 29 2026
Key Messages
- An active monsoonal pattern continues tonight with more showers and thunderstorms, especially west of the Divide. Stronger storms with heavy rain, strong wind, and small hail are possible.
- Somewhat drier and cooler Sunday and Monday. Patchy frost is possible in the western valleys Monday morning as temperatures drop into the 30s.
- Monsoonal moisture returns for much of next week, with a continuing chance of mainly afternoon showers and thunderstorms.
Discussion
... Issued at 257 AM MDT ...