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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

WhenTempForecastWindPrecip
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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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.