Dearborn County Climate
Dearborn County, Indiana
Avg Annual Temp
51.3°F
Annual Precip
47.5"
Annual Snowfall
15.9"
Extreme Heat Days
6.6
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Dearborn County Weather
Moderate and Very Humid
Dearborn County’s 51.3°F average temperature is slightly cooler than the national median. However, its 47.5 inches of precipitation makes it much wetter than the national average.
Colder and Wetter than Indiana
Despite its southeastern position, the county is nearly a degree cooler than the state average of 52.2°F. It receives significantly more precipitation than the Indiana average of 43.9 inches.
Fewer Extreme Heat Days
Dearborn only sees 7 days above 90°F annually, which is fewer than many surrounding counties. It maintains a damp climate with 15.9 inches of annual snowfall.
Mild Summers and Damp Winters
Summers are relatively comfortable with a July average of 72.3°F. Winter temperatures average 30.5°F, often bringing a mix of rain and 15.9 inches of snow.
Prioritize Dehumidification
With 47.5 inches of rain, moisture control in basements and crawlspaces is essential. Standard heating systems are adequate for the manageable 28.0°F January average.
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.