Lebanon, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lebanon, a city in Boone County, Indiana.
Overnight
63°F
Mostly Cloudy
Mostly cloudy. Low around 63, with temperatures rising to around 66 overnight. Southeast wind around 6 mph.
7-day forecast for Lebanon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Mostly Cloudy | 6 mph SE | 12% |
| Saturday | 85°F | Chance Showers And Thunderstorms | 6 to 9 mph S | 59% |
| Saturday Night | 68°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 7 mph S | 22% |
| Sunday | 81°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph NW | 66% |
| Sunday Night | 57°F | Showers And Thunderstorms Likely | 9 to 13 mph NE | 65% |
| Monday | 68°F | Showers And Thunderstorms Likely | 15 mph ENE | 60% |
| Monday Night | 52°F | Chance Rain Showers | 12 to 15 mph NE | 49% |
| Tuesday | 67°F | Chance Rain Showers | 14 mph NE | 35% |
| Tuesday Night | 53°F | Chance Showers And Thunderstorms | 7 to 14 mph NE | 35% |
| Wednesday | 67°F | Mostly Cloudy | 7 to 10 mph NNE | 13% |
| Wednesday Night | 53°F | Mostly Cloudy | 6 to 10 mph NNE | 8% |
| Thursday | 69°F | Partly Sunny | 6 to 9 mph NNE | 3% |
| Thursday Night | 53°F | Mostly Cloudy | 5 to 9 mph NNE | 3% |
| Friday | 71°F | Mostly Sunny | 6 to 9 mph NNE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Lebanon (40.033, -86.448). Updated through the day.
Growing snapshot for Lebanon
Last spring frost
Apr 21
First fall frost
Oct 20
Growing season
180 days
Hardiness zone
6a
More local growing data for Lebanon: nearby ZIP 46052 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Whitestown, In (6.6 mi from Lebanon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.