Putnam County Climate
Putnam County, Indiana
Avg Annual Temp
50.5°F
Annual Precip
46.2"
Annual Snowfall
21.0"
Extreme Heat Days
14.5
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Putnam County Weather
Classic Midwestern climate profile
Putnam County averages 50.5°F, sitting below the national median temperature. It is a relatively wet area, receiving 46.2 inches of annual precipitation.
Representative of central Indiana
The county is slightly cooler than the Indiana state average of 52.2°F. It avoids the extreme heat of the southern border and the heavy lake-effect snow of the northern border.
More snow than its neighbors
Putnam receives 21 inches of snow annually, which is more than neighboring Rush County. Its precipitation of 46.2 inches also makes it one of the wetter counties in the central region.
Four distinct Indiana seasons
The county sees a January average of 25.6°F and a July average of 72.2°F. It experiences 15 days of extreme heat, providing a balanced seasonal cycle throughout the year.
Plan for rain and snow
With 46.2 inches of rain, residents should ensure sump pumps and basement waterproofing are in good working order. Standard winter gear is necessary to handle the 21 inches of annual snowfall.
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.