Corunna, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Corunna, a town in Dekalb County, Indiana.
Overnight
58°F
Clear
Clear, with a low around 58. South wind around 0 mph.
7-day forecast for Corunna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Clear | 0 mph | 0% |
| Tuesday | 84°F | Sunny | 0 to 5 mph S | 0% |
| Tuesday Night | 60°F | Mostly Clear | 0 to 5 mph S | 0% |
| Wednesday | 86°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 66°F | Mostly Cloudy then Chance Showers And Thunderstorms | 0 to 5 mph SW | 51% |
| Thursday | 83°F | Showers And Thunderstorms Likely | 0 to 5 mph SW | 72% |
| Thursday Night | 64°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph SW | 72% |
| Friday | 84°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 39% |
| Friday Night | 64°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 39% |
| Saturday | 86°F | Mostly Sunny | 0 to 10 mph SW | 12% |
| Saturday Night | 67°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph SW | 16% |
| Sunday | 87°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 15 mph SW | 16% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 5 to 15 mph SW | 38% |
| Monday | 87°F | Chance Rain Showers | 5 to 10 mph SW | 38% |
Forecast source: National Weather Service (api.weather.gov) for Corunna (41.436, -85.144). Updated through the day.
Growing snapshot for Corunna
Last spring frost
Apr 29
First fall frost
Oct 17
Growing season
171 days
Hardiness zone
6a
More local growing data for Corunna: nearby ZIP 46730 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Garrett, In (8.2 mi from Corunna). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.