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
80°F
Mostly Cloudy
Mostly cloudy, with a high near 80. Northeast wind around 8 mph.
7-day forecast for St. Leon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 80°F | Mostly Cloudy | 8 mph NE | 6% |
| Tonight | 61°F | Partly Cloudy | 3 to 8 mph E | 3% |
| Saturday | 83°F | Patchy Fog then Chance Showers And Thunderstorms | 5 mph SE | 51% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 5 mph S | 45% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 6 mph SW | 41% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 8 mph NE | 42% |
| Monday | 75°F | Showers And Thunderstorms Likely | 9 mph NE | 55% |
| Monday Night | 58°F | Chance Showers And Thunderstorms | 7 to 10 mph NE | 50% |
| Tuesday | 71°F | Chance Showers And Thunderstorms | 9 mph NE | 42% |
| Tuesday Night | 58°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 32% |
| Wednesday | 70°F | Slight Chance Rain Showers | 5 to 8 mph N | 20% |
| Wednesday Night | 57°F | Slight Chance Rain Showers then Mostly Cloudy | 3 to 8 mph N | 15% |
| Thursday | 71°F | Partly Sunny | 7 mph N | 8% |
| Thursday Night | 56°F | Mostly Cloudy | 3 to 7 mph N | 7% |
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 Sep 18, 2026.