St. Leon, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Leon, a town in Franklin County, Indiana.
Today
83°F
Sunny
Sunny, with a high near 83. Northeast wind around 3 mph.
7-day forecast for St. Leon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 3 mph NE | 0% |
| Tonight | 63°F | Mostly Clear | 2 mph N | 1% |
| Wednesday | 86°F | Sunny | 3 mph N | 6% |
| Wednesday Night | 66°F | Mostly Clear | 2 mph W | 3% |
| Thursday | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 6 mph SW | 23% |
| Thursday Night | 67°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph SW | 61% |
| Friday | 84°F | Showers And Thunderstorms Likely | 2 to 6 mph SW | 66% |
| Friday Night | 66°F | Showers And Thunderstorms Likely | 1 to 5 mph SW | 66% |
| Saturday | 84°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 31% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SW | 31% |
| Sunday | 87°F | Mostly Sunny | 2 to 7 mph SW | 14% |
| Sunday Night | 69°F | Partly Cloudy | 6 mph SW | 14% |
| Monday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 8 mph SW | 20% |
| Monday Night | 70°F | Chance Showers And Thunderstorms | 6 mph SW | 28% |
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 Aug 4, 2026.