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City of Marietta, OKMarietta, OK Weather Forecast
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Marietta Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  | | | | | | | | |  | |
| Clear | Sunny | Clear | Sunny | Mostly Clear | Sunny | Clear | Sunny | Mostly Clear | Sunny | Partly Cloudy | Mostly Sunny |
| Lo: 79°FLo: 26°C | Hi: 104°FHi: 40°C | Lo: 75°FLo: 24°C | Hi: 104°FHi: 40°C | Lo: 75°FLo: 24°C | Hi: 105°FHi: 41°C | Lo: 79°FLo: 26°C | Hi: 108°FHi: 42°C | Lo: 79°FLo: 26°C | Hi: 103°FHi: 39°C | Lo: 75°FLo: 24°C | Hi: 103°FHi: 39°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 535 PM CDT Sat Aug 15 2026 
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Marietta Forecast Discussion
Issued: 549 PM CDT Sat Aug 15 2026
Key Messages
Updated at 547 PM CDT Sat Aug 15 2026
- Low rain/storm chances linger over northwest Oklahoma through Sunday, with chances increasing and expanding over the northern half of Oklahoma Sunday and Sunday night.
- Frontal boundary will results in a brief reprieve in extreme heat for northern Oklahoma Monday.
- Dangerous heat continues through the upcoming week.
Aviation
... (00Z TAFS) Issued at 547 PM CDT Sat Aug 15 2026
Mostly VFR conditions are expected through the...