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Thomas Tank Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
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| Patchy Fog | Partly Cloudy | Chance of T-Storm | Chance of Showers | Chance of T-Storm | Mostly Clear | Sunny | Mostly Clear | Sunny | Partly Cloudy | Partly Cloudy | Mostly Clear |
| Hi: 101°FHi: 38°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C | Lo: 71°FLo: 22°C | Hi: 100°FHi: 38°C | Lo: 75°FLo: 24°C | Hi: 100°FHi: 38°C | Lo: 75°FLo: 24°C |
| POP: 40% | POP: 20% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 123 AM CDT Wed Sep 16 2026 
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Issued: 638 AM CDT Wed Sep 16 2026
Key Messages
Issued at 630 AM CDT Wed Sep 16 2026- Major to Extreme risk of heat-related impacts across a large portion of South Texas Wednesday, then lowering to a moderate to high risk the rest of the week.
- Rain chances to a medium to high Thursday.
Discussion
... Issued at 1220 AM CDT Wed Sep 16 2026
As moisture continues to gradually advect into the region, heat index values will remain high Wednesday with a high to moderate risk of heat-related impacts. Some relief to the heat will come later th...