Franklin County Climate
Franklin County, Indiana
Avg Annual Temp
53.5°F
Annual Precip
43.8"
Annual Snowfall
17.6"
Extreme Heat Days
31.5
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Franklin County Weather
Mirroring the National Temperature Median
Franklin County’s average annual temperature of 53.5°F almost perfectly matches the national median of 53.8°F. This makes it one of the most temperature-representative counties in the region compared to the rest of the country.
A Warm Spot on the Indiana Map
The county is warmer than the state average, posting 53.5°F against Indiana's 52.2°F. Its annual precipitation of 43.8 inches is nearly identical to the statewide average of 43.9 inches.
Leading the Region in Summer Heat
Franklin County experiences 32 days of extreme heat per year, significantly more than Grant County's 14 days. This southern-shifted climate brings more July heat than most counties in central and northern Indiana.
High Heat Humidity and Brisk Winters
July is the warmest month with an average of 75.4°F, frequently pushing past the 90°F mark. Winters are relatively moderate for the state, with a December-February average of 32.0°F and 17.6 inches of snow.
Preparing for Extreme Summer Heat Waves
With over a month of 90°F+ days, residents should ensure their cooling systems are serviced early in the spring. The 17.6 inches of snow is manageable, but high-quality rain gear is necessary for the 43.8 inches of annual rainfall.
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.