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Dewey County, OK Weather Forecast
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Dewey County Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
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| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Sunny | Mostly Clear | Chance of T-Storm | Chance of T-Storm | Sunny | Mostly Clear | Chance of T-Storm | Chance of T-Storm |
| Hi: 102°FHi: 39°C | Lo: 71°FLo: 22°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C | Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°C | Lo: 69°FLo: 21°C |
| POP: 20% | POP: 70% | POP: 80% | POP: 40% | POP: 20% | POP: 30% | POP: 20% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 535 AM CDT Wed Sep 09 2026 
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Issued: 605 AM CDT Wed Sep 9 2026
Key Messages
Updated at 202 AM CDT Wed Sep 9 2026- Ongoing heatwave continues through Wednesday with triple digit heat indices and lows well above normal.
- Cooler temperatures and scattered to numerous storms expected late Wednesday into Thursday. Strong to severe storms possible across northern Oklahoma Wednesday afternoon and evening.
- Heat tries to rebound this weekend with low rain chances each day.
Aviation
... (12Z TAFS) Issued at 605 AM CDT Wed Sep 9 2026
VFR conditions will continue areawide in...