Cass County Climate
Cass County, Michigan
Avg Annual Temp
48.1°F
Annual Precip
41.7"
Annual Snowfall
—
Extreme Heat Days
11.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Cass County Weather
Wetter and Warmer Southern Michigan Living
Cass County averages 48.1°F annually, which is roughly 7 degrees cooler than the national median. It is characterized by significant annual moisture and a southern latitude that softens the winter.
High Precipitation in the Southern Tier
The county's 41.7 inches of annual precipitation far exceeds the state average of 34.5 inches. Despite the rain, it remains warmer than the Michigan average, recording 48.1°F annually.
Leading the Region in Rainfall
Cass is one of the wettest counties in the area, receiving nearly 7 inches more precipitation than the Michigan average. While specific snowfall data is limited for this county, the high total precipitation suggests wet winters.
Humid Summers and Frequent Heat
July averages 70.8°F and the county endures 11 days of extreme heat above 90°F each year. Winter remains fairly typical for the southern border with a 26.3°F average.
Manage Water and Summer Humidity
Given the high 41.7 inches of rain, residents must focus on sump pumps and landscape grading. Cooling systems are essential to navigate the 11 days of extreme summer heat.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.