Weather WorldWilliamson Lake, SC Weather Forecast
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Williamson Lake Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
 |  |  |  |  | |  | | | | | |
| Partly Cloudy | Sunny | Mostly Clear | Chance of T-Storm | Thunderstorms | Chance of T-Storm | Chance of T-Storm | Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Sunny |
| Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C |
| POP: 70% | POP: 70% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 908 PM EDT Wed Aug 19 2026 
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Williamson Lake Forecast Discussion
Issued: 723 PM EDT Wed Aug 19 2026
Key Messages
- 1. Increasing chances for widespread rain Friday and Saturday.
Discussion
... KEY MESSAGE 1: Increasing chances for widespread rain Friday and Saturday.
Moisture continues to remain relatively low at least in the north and western portion of the forecast, pooling ahead of a weak boundary with PWATs around 2 inches generally south of I-20. While isolated storms remains possible in the south and eastern portions of the area this afternoon, convection will on...