Putnam County Climate
Putnam County, Indiana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
50.5°F
Annual Precip
46.2"
Annual Snowfall
21.0"
Extreme Heat Days
15
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6a
Minimum winter temperature range for plant survival
3,059
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Putnam County
Climate Verdict
Putnam County has a mild, with an average annual temperature of 50.5°F, moderately wet with 46.2 inches of annual precipitation, rare extreme heat with only 14.5 days above 90°F annually, moderate snowfall of 21.0 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 25.6°F. summers are warm — July averages 72.2°F. The 47°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Putnam County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Putnam County closely matches the Indiana statewide average temperature of 52.4°F.
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 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.