South Lebanon, OH Weather & Growing Conditions
Tonight
61°F
Mostly Cloudy then Showers And Thunderstorms Likely
A slight chance of rain showers between 1am and 4am, then showers and thunderstorms likely. Mostly cloudy, with a low around 61. Southeast wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 61°F | Mostly Cloudy then Showers And Thunderstorms Likely | 9 to 14 mph SE | 63% |
| Wednesday | 69°F | Showers And Thunderstorms | 14 to 17 mph S | 100% |
| Wednesday Night | 51°F | Chance Rain Showers | 3 to 12 mph SW | 44% |
| Thursday | 67°F | Mostly Sunny | 5 to 13 mph SW | 0% |
| Thursday Night | 44°F | Partly Cloudy | 0 to 7 mph SW | 1% |
| Friday | 63°F | Partly Sunny | 0 to 9 mph NW | 7% |
| Friday Night | 39°F | Partly Cloudy | 5 to 8 mph NW | 13% |
| Saturday | 57°F | Mostly Sunny | 3 to 8 mph NW | 13% |
| Saturday Night | 34°F | Partly Cloudy | 0 to 5 mph NW | 10% |
| Sunday | 59°F | Mostly Sunny | 0 to 10 mph W | 9% |
| Sunday Night | 33°F | Partly Cloudy | 2 to 7 mph W | 14% |
| Monday | 61°F | Sunny | 3 to 12 mph W | 14% |
| Monday Night | 37°F | Mostly Clear | 5 to 8 mph SW | 11% |
| Tuesday | 65°F | Sunny | 6 to 10 mph W | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for South Lebanon, OH
Last spring frost
Apr 23
First fall frost
Oct 18
Growing season
177 days
Hardiness zone
6b
Explore more for South Lebanon, OH: full frost dates · planting calendar · Ohio frost dates
Climate data from the nearest NOAA station, Milford, Oh (13.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.