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Defiance Weather Forecast
| TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  | | | | | |  |  |  |  |
| Chance of T-Storm | Chance of T-Storm | Chance of Showers | Showers | Showers | Showers | Showers | Showers | Chance of Showers | Chance of Showers | Mostly Sunny | Partly Cloudy |
| Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 59°FHi: 15°C | Lo: 49°FLo: 9°C | Hi: 59°FHi: 15°C | Lo: 49°FLo: 9°C | Hi: 59°FHi: 15°C | Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C |
| POP: 100% | POP: 50% | POP: 70% | POP: 90% | POP: 100% | POP: 70% | POP: 70% | POP: 60% | POP: 50% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 900 AM EDT Sun Sep 20 2026 
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Issued: 757 AM EDT Sun Sep 20 2026
Key Messages
1) Periods of rain today, perhaps a few thunderstorms in the south.
2) Rainy potential continues into much of this week, although uncertainty remains in the details. On the cool side as well.
Discussion
... KEY MESSAGE 1: Periods of rain today, perhaps a few thunderstorms in the south.
Area of showers developing over far SWrn PA may slide just to our south as forcing dips S. However, earlier heavy rain and RAP progs indicatee that at least areas S of the Turnpike, if not Rte 22, could ha...