Corunna, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Corunna, a city in Shiawassee County, Michigan.
Tonight
58°F
Patchy Fog
Patchy fog before 8pm, then patchy fog and a slight chance of showers and thunderstorms between 8pm and 9pm, then patchy fog and a chance of showers and thunderstorms between 9pm and 11pm, then patchy fog and a chance of showers and thunderstorms between 11pm and midnight, then patchy fog and showers and thunderstorms. Mostly cloudy, with a low around 58. East northeast wind 3 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Corunna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Patchy Fog | 3 to 8 mph ENE | 86% |
| Sunday | 69°F | Rain Showers Likely then Mostly Cloudy | 7 to 13 mph NE | 56% |
| Sunday Night | 49°F | Mostly Cloudy | 8 to 13 mph NE | 10% |
| Monday | 63°F | Mostly Cloudy | 9 to 13 mph NE | 10% |
| Monday Night | 46°F | Mostly Cloudy | 8 to 13 mph NE | 4% |
| Tuesday | 63°F | Partly Sunny | 8 to 14 mph ENE | 5% |
| Tuesday Night | 49°F | Slight Chance Rain Showers | 13 mph ENE | 24% |
| Wednesday | 63°F | Chance Rain Showers | 13 mph ENE | 42% |
| Wednesday Night | 49°F | Chance Rain Showers | 6 to 12 mph ENE | 42% |
| Thursday | 66°F | Partly Sunny | 9 mph ENE | 9% |
| Thursday Night | 49°F | Mostly Cloudy | 2 to 8 mph ENE | 9% |
| Friday | 70°F | Mostly Sunny | 3 to 8 mph NE | 8% |
| Friday Night | 48°F | Partly Cloudy | 1 to 8 mph NNE | 4% |
| Saturday | 72°F | Mostly Sunny | 1 to 6 mph NNE | 3% |
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
Nearby towns & communities
Bancroft
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Durand
Henderson
Laingsburg
Lake Victoria
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Middletown
Morrice
New Lothrop
Owosso
Perry
Shaftsburg
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 20, 2026.