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Waynesburg, IN Weather Forecast
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Waynesburg Weather Forecast
| TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  |  |  | |  |  | |  | | | |
| Clearing | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Clear | Mostly Clear | Chance of T-Storm | Chance of Showers | Mostly Clear | Mostly Clear | Partly Cloudy |
| Hi: 79°FHi: 26°C | Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C | Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C | Hi: 80°FHi: 27°C Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C |
| POP: 50% | POP: 70% | POP: 40% | POP: 30% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 228 AM EDT Tue Aug 18 2026 
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Waynesburg Forecast Discussion
Issued: 302 AM EDT Tue Aug 18 2026
Key Messages
- Areas of fog possible this morning, locally dense fog cannot be ruled out near valleys or rivers
- Low rain chances return tonight, scattered to numerous showers and storms are expected on Wednesday
- Localized flash flooding is possible on Wednesday
- Turning generally milder and drier late week into the weekend, chance for showers and storms on Saturday
Discussion
(Today through Monday)... Issued at 301 AM EDT Tue Aug 18 2026
Today...
Surface high pressure acros...