Corunna, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Corunna, a town in Dekalb County, Indiana.
This Afternoon
73°F
Mostly Sunny
Mostly sunny, with a high near 73. East wind around 10 mph.
7-day forecast for Corunna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Mostly Sunny | 10 mph E | 2% |
| Tonight | 57°F | Partly Cloudy then Chance Showers And Thunderstorms | 5 mph E | 31% |
| Saturday | 74°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph SE | 88% |
| Saturday Night | 63°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph S | 83% |
| Sunday | 72°F | Showers And Thunderstorms | 5 to 10 mph N | 80% |
| Sunday Night | 54°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 52% |
| Monday | 65°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 50% |
| Monday Night | 50°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 36% |
| Tuesday | 64°F | Mostly Cloudy then Slight Chance Rain Showers | 15 mph NE | 19% |
| Tuesday Night | 52°F | Slight Chance Rain Showers | 10 to 15 mph NE | 22% |
| Wednesday | 64°F | Slight Chance Rain Showers | 10 mph NE | 21% |
| Wednesday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 18% |
| Thursday | 67°F | Partly Sunny | 5 to 10 mph N | 8% |
| Thursday Night | 52°F | Mostly Cloudy | 5 to 10 mph NE | 6% |
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 Sep 19, 2026.