Defiance, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Defiance, a city in Defiance County, Ohio.
Today
85°F
Sunny
Sunny, with a high near 85. Southeast wind 0 to 5 mph.
7-day forecast for Defiance
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 0 to 5 mph SE | 0% |
| Tonight | 59°F | Mostly Clear | 0 mph | 0% |
| Wednesday | 87°F | Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 65°F | Partly Cloudy | 0 to 5 mph SW | 12% |
| Thursday | 85°F | Slight Chance Showers And Thunderstorms | 0 to 10 mph SW | 61% |
| Thursday Night | 65°F | Showers And Thunderstorms Likely | 0 to 5 mph SW | 64% |
| Friday | 85°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 49% |
| Friday Night | 64°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 48% |
| Saturday | 87°F | Mostly Sunny | 0 to 10 mph SW | 11% |
| Saturday Night | 66°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 19% |
| Sunday | 89°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 15 mph SW | 19% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 10 to 15 mph SW | 39% |
| Monday | 89°F | Chance Rain Showers | 10 to 15 mph SW | 39% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 49% |
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 Aug 4, 2026.