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Chatham Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
 |  | | |  | | | | |  | | |
| Chance of T-Storm | Mostly Clear | Chance of T-Storm | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear |
| 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: 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: 70°FLo: 21°C |
| POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 627 AM CDT Sat Sep 12 2026 
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Issued: 1245 PM CDT Sat Sep 12 2026
Key Messages
Issued at 1238 AM CDT Sat Sep 12 2026- Brief respite from heat headlines has ended as the upper ridge will gradually expand back across the region throughout this weekend, prompting an areawide heat advisory today.
- Remnant sfc trough will linger over the region today along the eastern periphery of the ridge axis, serving as a trigger for isolated convection through this afternoon.
- Intense heat will persist throughout much of next week before a possible pattern shift late next weekend,...