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Isom Weather Forecast
| EARLY THIS MORNING | TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  |  | |  | | |  |  | |  |  |
| Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Showers | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Partly Cloudy | Partly Cloudy | Mostly Clear | Partly Sunny |
| Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Hi: 69°FHi: 21°C Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C Lo: 55°FLo: 13°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C |
| POP: 60% | POP: 70% | POP: 60% | POP: 70% | POP: 90% | POP: 80% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 247 AM EDT Mon Sep 21 2026 
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Issued: 500 AM EDT Mon Sep 21 2026
Key Messages
- Unseasonably hot and muggy weather continues through today, with high temperatures in the mid 80s to low 90s.
- Strong to severe thunderstorms with damaging wind gusts are possible this afternoon and evening, primarily south of the Mountain Parkway.
- A stalled front brings rounds of showers and possible storms tonight through Wednesday, with isolated flash flooding possible, primarily closer to the VA-KY border.
- Cooler, drier air arrives Thursday through the weekend, bringing daytime hi...