Isabella County Climate
Isabella County, Michigan
Avg Annual Temp
47.8°F
Annual Precip
35.5"
Annual Snowfall
—
Extreme Heat Days
13.1
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Isabella County Weather
Moderate temperatures in the Michigan heartland
Isabella County records an average annual temperature of 47.8°F. While this is cooler than the national median, it is relatively warm for the Great Lakes region.
Warmer than the average Michigan county
At 47.8°F, Isabella sits more than two degrees above the Michigan state average of 45.7°F. This central location avoids the most extreme cold found further north.
Wet and warm compared to neighbors
The county receives 35.5 inches of precipitation, slightly more than the state average of 34.5 inches. It experiences 13 extreme heat days, indicating a more intense summer than coastal counties.
Hot July days and cold winters
Summer highs reach an average of 72.2°F in July, though snowfall data for the region is currently limited. The winter months average 25.2°F, which is milder than northern Michigan peers.
Central air is a priority here
With 13 days of 90°F heat, air conditioning is a vital investment for resident comfort. Homeowners should also prepare for 35.5 inches of annual rain with proper basement drainage systems.
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.