Winn, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Winn, a community in Isabella County, Michigan.
Tonight
49°F
Rain Showers Likely
Rain showers likely. Cloudy. Low around 49, with temperatures rising to around 51 overnight. East wind 5 to 8 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Winn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Rain Showers Likely | 5 to 8 mph E | 59% |
| Saturday | 64°F | Rain Showers Likely | 5 to 9 mph E | 74% |
| Saturday Night | 53°F | Showers And Thunderstorms Likely | 5 to 9 mph ENE | 70% |
| Sunday | 68°F | Chance Rain Showers | 8 to 13 mph NE | 36% |
| Sunday Night | 48°F | Mostly Cloudy | 12 mph NE | 3% |
| Monday | 62°F | Cloudy | 12 to 15 mph ENE | 5% |
| Monday Night | 44°F | Mostly Cloudy | 9 to 15 mph ENE | 5% |
| Tuesday | 62°F | Partly Sunny | 12 to 16 mph ENE | 13% |
| Tuesday Night | 46°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 16 mph ENE | 21% |
| Wednesday | 64°F | Chance Rain Showers | 13 mph ENE | 30% |
| Wednesday Night | 47°F | Chance Rain Showers then Mostly Cloudy | 5 to 13 mph NE | 25% |
| Thursday | 67°F | Partly Sunny | 6 to 10 mph NE | 7% |
| Thursday Night | 47°F | Mostly Cloudy | 2 to 8 mph NNE | 6% |
| Friday | 70°F | Mostly Sunny | 2 to 8 mph NNE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Winn (43.519, -84.901). Updated through the day.
Growing snapshot for Winn
Last spring frost
Apr 30
First fall frost
Oct 20
Growing season
171 days
Hardiness zone
5b
More local growing data for Winn: nearby ZIP 48896 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Central Michigan Univ, Mi (8 mi from Winn). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.