Corunna, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Corunna, a city in Shiawassee County, Michigan.
Today
65°F
Rain Showers
Rain showers before 2pm, then showers and thunderstorms likely between 2pm and 5pm, then patchy fog and a chance of showers and thunderstorms. Cloudy. High near 65, with temperatures falling to around 63 in the afternoon. East southeast wind 3 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Corunna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 65°F | Rain Showers | 3 to 8 mph ESE | 81% |
| Tonight | 57°F | Patchy Fog | 7 mph E | 81% |
| Sunday | 69°F | Chance Rain Showers | 7 to 14 mph NE | 35% |
| Sunday Night | 49°F | Mostly Cloudy | 8 to 14 mph NE | 1% |
| Monday | 62°F | Mostly Cloudy | 9 to 13 mph NE | 1% |
| Monday Night | 45°F | Mostly Cloudy | 8 to 13 mph NE | 2% |
| Tuesday | 62°F | Partly Sunny | 9 to 14 mph NE | 4% |
| Tuesday Night | 48°F | Mostly Cloudy then Chance Rain Showers | 10 to 14 mph ENE | 35% |
| Wednesday | 63°F | Chance Rain Showers | 13 mph ENE | 43% |
| Wednesday Night | 48°F | Chance Rain Showers | 6 to 12 mph ENE | 43% |
| Thursday | 66°F | Partly Sunny | 6 to 9 mph NE | 11% |
| Thursday Night | 48°F | Mostly Cloudy | 3 to 8 mph NE | 11% |
| Friday | 70°F | Mostly Sunny | 3 to 9 mph NNE | 7% |
| Friday Night | 47°F | Mostly Clear | 2 to 9 mph NE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Corunna (42.983, -84.116). Updated through the day.
Growing snapshot for Corunna
Last spring frost
May 1
First fall frost
Oct 15
Growing season
164 days
Hardiness zone
6a
More local growing data for Corunna: nearby ZIP 48867 weather · frost dates · planting calendar · Michigan frost dates
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Vernon
Climate data from the nearest NOAA station, Owosso Wwtp, Mi (0.8 mi from Corunna). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.