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South Lebanon, OH Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for South Lebanon, a village in Warren County, Ohio.

This Afternoon
87°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 3pm and 4pm, then showers and thunderstorms likely. Partly sunny, with a high near 87. Southwest wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast for South Lebanon

WhenTempForecastWindPrecip
This Afternoon 87°F Slight Chance Showers And Thunderstorms 8 mph SW 60%
Tonight 68°F Showers And Thunderstorms Likely then Chance Showers And Thunderstorms 7 mph S 71%
Sunday 88°F Slight Chance Rain Showers then Chance Showers And Thunderstorms 5 to 9 mph SW 45%
Sunday Night 60°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 9 mph N 60%
Monday 74°F Chance Rain Showers 9 to 13 mph NE 41%
Monday Night 55°F Chance Showers And Thunderstorms 9 to 14 mph NE 41%
Tuesday 72°F Chance Showers And Thunderstorms 12 mph NE 29%
Tuesday Night 57°F Chance Showers And Thunderstorms 6 to 14 mph NE 43%
Wednesday 72°F Chance Rain Showers 9 mph NE 51%
Wednesday Night 56°F Chance Showers And Thunderstorms 5 to 13 mph NE 51%
Thursday 72°F Mostly Cloudy 5 to 9 mph NE 11%
Thursday Night 55°F Mostly Cloudy 5 to 9 mph NE 11%
Friday 73°F Mostly Sunny 5 to 10 mph NE 9%
Friday Night 52°F Partly Cloudy 5 to 10 mph NE 9%

Forecast source: National Weather Service (api.weather.gov) for South Lebanon (39.363, -84.220). Updated through the day.

Growing snapshot for South Lebanon

Last spring frost
Apr 23
First fall frost
Oct 18
Growing season
177 days
Hardiness zone
6b

More local growing data for South Lebanon: nearby ZIP 45065 weather · frost dates · planting calendar · Ohio frost dates

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Climate data from the nearest NOAA station, Milford, Oh (13.6 mi from South Lebanon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.