Defiance, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Defiance, a city in Defiance County, Ohio.
This Afternoon
75°F
Mostly Sunny
Mostly sunny, with a high near 75. East wind around 10 mph.
7-day forecast for Defiance
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Mostly Sunny | 10 mph E | 1% |
| Tonight | 57°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph E | 16% |
| Saturday | 77°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph E | 88% |
| Saturday Night | 63°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph S | 86% |
| Sunday | 75°F | Showers And Thunderstorms | 5 to 15 mph NW | 84% |
| Sunday Night | 54°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 58% |
| Monday | 66°F | Chance Rain Showers | 15 mph NE | 41% |
| Monday Night | 51°F | Chance Rain Showers | 15 mph NE | 41% |
| Tuesday | 64°F | Slight Chance Rain Showers | 15 mph NE | 20% |
| Tuesday Night | 53°F | Chance Rain Showers | 15 mph NE | 33% |
| Wednesday | 66°F | Chance Rain Showers | 15 mph NE | 33% |
| Wednesday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 15 mph NE | 17% |
| Thursday | 68°F | Mostly Cloudy | 10 mph NE | 7% |
| Thursday Night | 51°F | Mostly Cloudy | 5 to 10 mph N | 7% |
Forecast source: National Weather Service (api.weather.gov) for Defiance (41.281, -84.366). Updated through the day.
Growing snapshot for Defiance
Last spring frost
Apr 22
First fall frost
Oct 24
Growing season
183 days
Hardiness zone
6a
More local growing data for Defiance: nearby ZIP 43512 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Defiance, Oh (2.2 mi from Defiance). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.