Defiance, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Defiance, a city in Defiance County, Ohio.
Overnight
62°F
Chance Rain Showers
A chance of rain showers after 3am. Mostly cloudy, with a low around 62. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
7-day forecast for Defiance
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Chance Rain Showers | 15 mph S | 47% |
| Wednesday | 70°F | Rain Showers | 15 to 20 mph S | 81% |
| Wednesday Night | 51°F | Chance Rain Showers | 5 to 15 mph SW | 39% |
| Thursday | 61°F | Mostly Sunny | 10 to 15 mph SW | 4% |
| Thursday Night | 45°F | Mostly Cloudy | 0 to 10 mph SW | 4% |
| Friday | 55°F | Chance Rain Showers | 0 to 5 mph NW | 32% |
| Friday Night | 37°F | Chance Rain Showers | 5 to 10 mph NW | 22% |
| Saturday | 53°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph NW | 17% |
| Saturday Night | 33°F | Partly Cloudy | 0 to 5 mph W | 4% |
| Sunday | 55°F | Mostly Sunny then Slight Chance Rain Showers | 0 to 10 mph W | 17% |
| Sunday Night | 34°F | Slight Chance Rain Showers then Partly Cloudy | 5 to 10 mph W | 17% |
| Monday | 58°F | Mostly Sunny | 5 to 15 mph W | 13% |
| Monday Night | 38°F | Partly Cloudy | 10 mph SW | 10% |
| Tuesday | 61°F | Mostly Sunny | 10 to 15 mph W | 3% |
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.