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Lanark Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  | |  | | | | | | |  | |
| Mostly Clear | Chance of T-Storm | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Chance of T-Storm | Chance of T-Storm |
| 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: 99°FHi: 37°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C |
| POP: 20% | POP: 20% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 627 PM CDT Tue Sep 15 2026 
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Issued: 651 PM CDT Tue Sep 15 2026
Key Messages
Issued at 144 PM CDT Tue Sep 15 2026- Heat advisory headlines continue now through Wednesday at 7pm. and likely beyond for short term in the late work week.
- Rain chances are slight again for Wednesday, but overall remain slim to none through the remainder of this week into the first half of the weekend as drier air lobes in from the east.
- Some good news is that the upper level heat ridge will weaken while retrograding westward with an upper low drifting westward over the northern Gulf...