Harman US

Defiance, OH Weather & Growing Conditions

Overnight
57°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Cloudy, with a low around 57. East wind around 5 mph. Chance of precipitation is 20%.

7-day forecast

WhenTempForecastWindPrecip
Overnight 57°F Slight Chance Showers And Thunderstorms 5 mph E 15%
Saturday 73°F Chance Showers And Thunderstorms then Showers And Thunderstorms 5 mph E 80%
Saturday Night 64°F Showers And Thunderstorms Likely 0 to 5 mph SE 80%
Sunday 74°F Showers And Thunderstorms 5 to 15 mph NW 89%
Sunday Night 53°F Chance Showers And Thunderstorms 10 to 15 mph NE 53%
Monday 66°F Chance Rain Showers 15 mph NE 41%
Monday Night 50°F Slight Chance Rain Showers 15 mph NE 23%
Tuesday 64°F Mostly Cloudy then Slight Chance Rain Showers 15 to 20 mph NE 17%
Tuesday Night 51°F Chance Rain Showers 15 to 20 mph NE 47%
Wednesday 65°F Chance Rain Showers 15 mph NE 52%
Wednesday Night 51°F Chance Showers And Thunderstorms 5 to 15 mph NE 52%
Thursday 68°F Mostly Cloudy 5 to 10 mph NE 12%
Thursday Night 50°F Mostly Cloudy 5 to 10 mph NE 7%
Friday 70°F Mostly Sunny 5 to 10 mph NE 7%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Defiance, OH

Last spring frost
Apr 22
First fall frost
Oct 24
Growing season
183 days
Hardiness zone
6a

Explore more for Defiance, OH: full frost dates · planting calendar · Ohio frost dates

Climate data from the nearest NOAA station, Defiance, Oh (2.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.