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Dayton Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
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| Mostly Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Sunny | Patchy Fog | Patchy Fog | Clear | Mostly Sunny | Showers | Partly Sunny | Partly Cloudy |
| Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 81°FHi: 27°C | Lo: 69°FLo: 21°C | Hi: 80°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C |
| POP: 50% | POP: 100% | POP: 90% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 502 AM EDT Sat Aug 15 2026 
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Dayton Forecast Discussion
Issued: 706 AM EDT Sat Aug 15 2026
Key Messages
1) The next thunderstorm cluster is favored to cross late tonight into Sunday morning, posing a flash flood and limited wind threat.
2) Varying storm and hazardous weather risks for Sunday afternoon/evening.
3) After lingering rain chances dissipate Monday, there is fairly high confidence in dry weather until the next system arrives Wednesday/Thursday.
Discussion
... KEY MESSAGE 1... A thunderstorm cluster is expected to develop near northern IL into Saturda...