Bartholomew County Climate
Bartholomew County, Indiana
Avg Annual Temp
54.1°F
Annual Precip
47.3"
Annual Snowfall
16.3"
Extreme Heat Days
21.9
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Bartholomew County Weather
Warmer and Wetter Than National Medians
Bartholomew County's 54.1°F annual average is slightly warmer than the national median. This region experiences the humid continental climate with a noticeable lean toward warmer southern Indiana patterns.
Warmer Than the Indiana Mean
The county is significantly warmer than the Indiana average, exceeding the 52.2°F state mean by nearly two degrees. Its 47.3 inches of annual precipitation also outpaces the state average of 43.9 inches.
Warmer and Rainier Than Northern Counties
It is much warmer than northern neighbors like Boone County, which averages only 51.5°F. It also receives nearly 10 inches more precipitation than Allen County to the north.
Intense Summer Heat and Mild Winters
Heat is a major factor here, with 22 days per year reaching 90°F or higher. Winter is relatively mild for Indiana, seeing only 16.3 inches of snow and a 32.6°F average.
Prioritize Cooling and Flood Preparedness
Prioritize high-efficiency HVAC systems to manage the 22 annual extreme heat days. Residents should prepare for a wetter climate, as the county receives over 47 inches of rain annually.
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.