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City of Williamstown, KentuckyWilliamstown, KY Weather Forecast
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Williamstown Weather Forecast
| TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
 |  | |  | | |  |  | | |  |  |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Chance of T-Storm | Clearing | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Chance of Showers |
| Lo: 69°FLo: 21°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 90°FHi: 32°C | Lo: 71°FLo: 22°C | Hi: 85°FHi: 29°C |
| POP: 40% | POP: 70% | POP: 40% | POP: 30% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 405 PM EDT Fri Sep 11 2026 
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Issued: 206 PM EDT Fri Sep 11 2026
Key Messages
1) Occasional showers and thunderstorms are expected this weekend. Locally heavy rainfall will be possible Saturday into Saturday evening.
2) Additional chances for precipitation are expected during the middle part of next week.
Discussion
... KEY MESSAGE 1) A mid level short wave will move through the Ohio Valley later tonight through Saturday in progressive zonal flow aloft. Southwest low level flow will develop ahead of this with a 20-30 knot low level jet shifting into the mid Ohio ...