Weather World
Barnett Lake, SC Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Barnett Lake Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY | TUESDAY | WEDNESDAY |
 |  |  |  | | | |  | | | |
| Chance of T-Storm | Patchy Fog | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Partly Cloudy | Chance of T-Storm | Chance of T-Storm |
| Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°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: 91°FHi: 33°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 |
| POP: 20% | POP: 50% | POP: 60% | POP: 80% | POP: 80% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 712 PM EDT Wed Aug 19 2026 
Barnett Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Barnett Lake Weather Map
Barnett Lake Quick Facts
Barnett Lake Forecast Discussion
Issued: 725 PM EDT Wed Aug 19 2026
Key Messages
1) Dangerous heat to continue through Thursday.
2) Isolated severe storms possible on Friday.
Discussion
... KEY MESSAGE 1...Dangerous heat to continue through Thursday.
Above normal temperatures will continue through at least Thursday before increasing coverage of thunderstorms brings slightly cooler temperatures by Friday. As with the last few days, the main nuance will be tracking where deep daytime vertical mixing dilutes high surface dewpoints with drie...