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Rock Mill Lake, OH Weather Forecast
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Rock Mill Lake Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
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| Clearing | Clear | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Chance of Showers |
| Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C |
| POP: 60% | POP: 70% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 405 AM EDT Fri Aug 21 2026 
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Rock Mill Lake Forecast Discussion
Issued: 623 AM EDT Fri Aug 21 2026
Key Messages
1) Additional showers and thunderstorms are expected on Saturday as another cold front moves through the Ohio Valley.
Discussion
... KEY MESSAGE 1) Areas of fog will develop through the predawn hours, especially in the river valleys across our south and east. The fog will burn off through mid morning, with quieter conditions expected through the rest of the day.
Some mid level energy moving across the Great Lakes tonight will help deepen the trough over the region through the day on Sat...