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Duncan Weather Forecast
| REST OF TONIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  |  | | | | |  |  | | | |
| Partly Cloudy | Sunny | Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Chance of Showers | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear |
| Lo: 75°FLo: 24°C | Hi: 100°FHi: 38°C | 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: 75°FLo: 24°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C Lo: 71°FLo: 22°C |
| POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 841 PM CDT Sun Sep 06 2026 
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Instant definitions for any meteorological term.
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Issued: 649 PM CDT Sun Sep 6 2026
Key Messages
- There is a marginal risk (level 1 of 5) for severe storms into this evening.
- Dangerous heat stress will persist across much of the area through Monday.
Discussion
... Issued at 118 PM CDT Sun Sep 6 2026
Another hot and humid afternoon is underway, with heat indices now in the 105-110F range across much of the northern 2/3rd of the area. Areas further south got a later start due to morning low clouds, but they are into the 100-105F range and climbing. A weak cold front is approaching fro...