St. Omer, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Omer, a community in Decatur County, Indiana.
Tonight
65°F
Partly Cloudy
Partly cloudy. Low around 65, with temperatures rising to around 67 overnight. East northeast wind 5 to 8 mph.
7-day forecast for St. Omer
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 65°F | Partly Cloudy | 5 to 8 mph ENE | 8% |
| Saturday | 87°F | Partly Sunny then Chance Showers And Thunderstorms | 6 mph SSE | 52% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 5 mph SE | 52% |
| Sunday | 87°F | Chance Showers And Thunderstorms | 5 mph WSW | 37% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 8 mph NNE | 49% |
| Monday | 75°F | Showers And Thunderstorms Likely | 7 to 10 mph NE | 61% |
| Monday Night | 58°F | Chance Showers And Thunderstorms | 7 to 12 mph NE | 51% |
| Tuesday | 72°F | Chance Showers And Thunderstorms | 10 mph NE | 47% |
| Tuesday Night | 57°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 12 mph NNE | 33% |
| Wednesday | 71°F | Mostly Cloudy | 5 to 8 mph NNE | 11% |
| Wednesday Night | 56°F | Mostly Cloudy | 3 to 8 mph N | 11% |
| Thursday | 72°F | Partly Sunny | 3 to 7 mph N | 6% |
| Thursday Night | 56°F | Mostly Cloudy | 3 to 7 mph NNE | 6% |
| Friday | 72°F | Mostly Sunny | 3 to 7 mph NNE | 6% |
Forecast source: National Weather Service (api.weather.gov) for St. Omer (39.434, -85.593). Updated through the day.
Growing snapshot for St. Omer
Last spring frost
Apr 15
First fall frost
Oct 26
Growing season
194 days
Hardiness zone
6b
More local growing data for St. Omer: nearby ZIP 47272 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Adams
Andersonville
Burney
Clarksburg
Greensburg
Lake Santee
Letts
Milford
Millhousen
New Point
Sardinia
St. Paul
Westport
Climate data from the nearest NOAA station, Greensburg, In (8.3 mi from St. Omer). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.