Defiance, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Defiance, a city in Defiance County, Ohio.
Today
68°F
Rain Showers
Rain showers. Mostly cloudy, with a high near 68. South wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Defiance
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Rain Showers | 15 to 20 mph S | 80% |
| Tonight | 50°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph SW | 30% |
| Thursday | 60°F | Mostly Cloudy | 10 to 15 mph SW | 8% |
| Thursday Night | 46°F | Mostly Cloudy then Chance Rain Showers | 5 to 10 mph W | 27% |
| Friday | 54°F | Chance Rain Showers | 5 to 10 mph NW | 43% |
| Friday Night | 37°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NW | 27% |
| Saturday | 52°F | Partly Sunny | 5 to 10 mph NW | 10% |
| Saturday Night | 33°F | Partly Cloudy | 5 mph W | 2% |
| Sunday | 55°F | Mostly Sunny | 5 to 15 mph W | 7% |
| Sunday Night | 34°F | Mostly Clear | 5 to 10 mph W | 7% |
| Monday | 58°F | Sunny | 5 to 10 mph SW | 2% |
| Monday Night | 38°F | Mostly Clear | 5 to 10 mph SW | 1% |
| Tuesday | 62°F | Mostly Sunny | 5 to 10 mph W | 1% |
| Tuesday Night | 36°F | Partly Cloudy | 0 to 5 mph NW | 2% |
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 Nov 4, 2026.