Weather WorldLake Number Seventeen, SC Weather Forecast
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Lake Number Seventeen Weather Forecast
| REST OF TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
 |  | |  | | |  |  | | | | |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Thunderstorms | Chance of T-Storm | Chance of T-Storm | Sunny | Mostly Clear | Sunny | Mostly Clear | Chance of T-Storm | Chance of T-Storm |
| 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: 70°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C |
| POP: 20% | POP: 40% | POP: 70% | POP: 80% | POP: 50% | POP: 50% | POP: 30% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1008 AM EDT Thu Aug 20 2026 
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Lake Number Seventeen Forecast Discussion
Issued: 640 AM EDT Thu Aug 20 2026
Key Messages
- 1. Severe weather and flash flooding possible Friday.
Discussion
... KEY MESSAGE 1: Severe weather and flash flooding possible Friday.
Upper troughing amplifies over the eastern US Friday promoting SW flow into the forecast area. PWAT values rise to near or above 2 inches by the afternoon as surface low pressure develops near the area. Convergence along a surface boundary over the Carolinas will serve as the focus for thunderstorms in the afternoon as the a...