Bartholomew County Climate
Bartholomew County, Indiana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
54.1°F
Annual Precip
47.3"
Annual Snowfall
16.3"
Extreme Heat Days
22
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
3,724
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Bartholomew County
Climate Verdict
Bartholomew County has a mild, with an average annual temperature of 54.1°F, moderately wet with 47.3 inches of annual precipitation, occasional hot days — 21.9 per year above 90°F, light snow averaging 16.3 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 30.0°F. summers are warm — July averages 75.7°F. The 46°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Bartholomew County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Bartholomew County closely matches the Indiana statewide average temperature of 52.4°F, it is somewhat wetter than average for Indiana.
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 sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.