Weather WorldHarmon County, OK Weather Forecast
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Harmon County Weather Forecast
| THIS AFTERNOON | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
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| Sunny | Mostly Clear | Sunny | Clear | Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Sunny | Chance of T-Storm | Sunny | Chance of T-Storm |
| Hi: 100°FHi: 38°C | Lo: 75°FLo: 24°C | Hi: 103°FHi: 39°C | Lo: 75°FLo: 24°C | Hi: 103°FHi: 39°C | Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C | Lo: 71°FLo: 22°C | Hi: 100°FHi: 38°C | Lo: 71°FLo: 22°C | Hi: 100°FHi: 38°C | Lo: 71°FLo: 22°C |
| POP: 20% | POP: 30% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 129 PM CDT Mon Sep 07 2026 
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Issued: 1250 PM CDT Mon Sep 7 2026
Key Messages
Updated at 1249 PM CDT Mon Sep 7 2026- Ongoing heatwave continues through at least midweek with triple digit heat indices and lows well above normal.
- Very low chances for rain/storms across southeast Oklahoma on Monday.
- Possible pattern shift by late week with less dangerous heating and increasing rain chances late Wednesday into Thursday.
Aviation
... (18Z TAFS) Issued at 1221 PM CDT Mon Sep 7 2026
VFR conditions are expected to continue into Tuesday with generally light south winds. Ve...