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Castleton Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY |
 |  |  |  | | | |  |  | | |
| Partly Cloudy | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Mostly Cloudy | Partly Cloudy | Partly Cloudy |
| Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Hi: 75°FHi: 24°C Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C Lo: 60°FLo: 16°C | Hi: 70°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C |
| POP: 70% | POP: 70% | POP: 50% | POP: 60% | POP: 60% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 654 AM EDT Fri Sep 18 2026 
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Issued: 611 AM EDT Fri Sep 18 2026
Key Messages
- Hot temperatures will continue at times into the weekend especially south. Heat indices around 100 again today southwest.
- Scattered showers and storms, with locally heavy rain possible, will diminish this morning
- Shower and storm chances persist for much of the time into early next week, with temperatures turning cooler next week
Discussion
(Today through Thursday)... Issued at 247 AM EDT Fri Sep 18 2026
Early This Morning...
Thunderstorms from late evening Thursday sent another outflow ...