Cassopolis, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cassopolis, a village in Cass County, Michigan.
Tonight
57°F
Mostly Cloudy then Chance Showers And Thunderstorms
A chance of rain showers between 2am and 5am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 57. East wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Cassopolis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph E | 44% |
| Saturday | 73°F | Showers And Thunderstorms | 5 to 10 mph SE | 90% |
| Saturday Night | 61°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph S | 87% |
| Sunday | 70°F | Showers And Thunderstorms | 5 to 15 mph N | 81% |
| Sunday Night | 51°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 56% |
| Monday | 65°F | Chance Rain Showers | 15 mph NE | 43% |
| Monday Night | 48°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 26% |
| Tuesday | 64°F | Partly Sunny then Chance Rain Showers | 10 to 15 mph NE | 26% |
| Tuesday Night | 49°F | Chance Rain Showers | 10 to 15 mph NE | 26% |
| Wednesday | 65°F | Slight Chance Rain Showers then Partly Sunny | 10 mph NE | 17% |
| Wednesday Night | 50°F | Mostly Cloudy | 5 to 10 mph NE | 10% |
| Thursday | 68°F | Partly Sunny | 5 to 10 mph NE | 6% |
| Thursday Night | 50°F | Partly Cloudy | 0 to 5 mph NE | 5% |
| Friday | 70°F | Mostly Sunny | 5 mph NE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Cassopolis (41.912, -86.008). Updated through the day.
Growing snapshot for Cassopolis
Last spring frost
May 4
First fall frost
Oct 11
Growing season
158 days
Hardiness zone
6a
More local growing data for Cassopolis: nearby ZIP 49031 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Dowagiac 1 W, Mi (9.8 mi from Cassopolis). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.