St. Leon, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Leon, a town in Franklin County, Indiana.
This Afternoon
66°F
Chance Light Rain
A chance of rain. Mostly cloudy, with a high near 66. Southwest wind 8 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for St. Leon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Chance Light Rain | 8 to 12 mph SW | 43% |
| Tonight | 47°F | Patchy Drizzle then Mostly Cloudy | 3 to 7 mph W | 11% |
| Thursday | 63°F | Mostly Sunny | 5 to 12 mph SW | 0% |
| Thursday Night | 43°F | Mostly Cloudy | 2 to 6 mph W | 2% |
| Friday | 55°F | Mostly Cloudy | 3 to 8 mph NW | 8% |
| Friday Night | 35°F | Partly Cloudy | 7 mph NW | 5% |
| Saturday | 52°F | Mostly Sunny | 3 to 7 mph NW | 0% |
| Saturday Night | 31°F | Partly Cloudy | 3 mph NW | 0% |
| Sunday | 56°F | Sunny | 2 to 7 mph W | 0% |
| Sunday Night | 33°F | Mostly Clear | 5 mph W | 0% |
| Monday | 61°F | Sunny | 1 to 6 mph W | 0% |
| Monday Night | 37°F | Mostly Clear | 5 mph SW | 0% |
| Tuesday | 63°F | Sunny | 7 mph W | 1% |
| Tuesday Night | 37°F | Mostly Clear | 3 mph NW | 4% |
Forecast source: National Weather Service (api.weather.gov) for St. Leon (39.299, -84.967). Updated through the day.
Growing snapshot for St. Leon
Last spring frost
Apr 20
First fall frost
Oct 21
Growing season
182 days
Hardiness zone
6b
More local growing data for St. Leon: nearby ZIP 47035 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Blooming Grove
Brookville
Cedar Grove
Hamburg
Lake View
Lakeshore Resort
Laurel
Metamora
Mount Carmel
New Trenton
Peppertown
Climate data from the nearest NOAA station, Brookville, In (9.8 mi from St. Leon). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.