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Sullivan Weather Forecast
| THIS AFTERNOON | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY |
 |  | |  |  |  |  |  |  | | | |
| Mostly Sunny | Mostly Clear | Sunny | Chance of T-Storm | Showers | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Chance of T-Storm | Clearing | Mostly Clear | Mostly Clear |
| Hi: 91°FHi: 33°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C Lo: 65°FLo: 18°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 90°FHi: 32°C Lo: 69°FLo: 21°C | Hi: 90°FHi: 32°C Lo: 69°FLo: 21°C |
| POP: 70% | POP: 90% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1202 PM CDT Tue Sep 08 2026 
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Issued: 1222 PM CDT Tue Sep 8 2026
Key Messages
- Hot temperatures return today and especially Wednesday, with highs in the 90s today, and the middle 90s to around 100 degrees Wednesday. Heat index readings today will be around 100 degrees, and in the 100 to 110 degree range Wednesday.
- An approaching cold front will provide chances of showers and some thunderstorms late Wednesday through Thursday night. The best chances of 75% to 95% will be late Wednesday night through the day Thursday.
- 20-40% chances of showers and storms will lin...