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Flat Lake Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  | | | | | | | | | |  |
| Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Chance of T-Storm |
| Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°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: 99°FHi: 37°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 605 PM CDT Mon Sep 14 2026 
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Issued: 652 PM CDT Mon Sep 14 2026
Key Messages
Issued at 652 PM CDT Mon Sep 14 2026- Dangerous heat will persist into at least the middle of the week. Little rainfall is expected over the next seven days.
- An areawide Heat Advisory is in effect through 7 PM Tuesday. Expect heat indices between 105 and 109 degrees.
- Temperatures are forecast to moderate slightly by early next week, returning closer to seasonal normals with highs near 90 degrees.
Discussion
... (This evening through next Sunday) Issued at 1235 PM CDT Mon Sep 14 2026
A wa...