Posey County Climate
Posey County, Indiana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
56.3°F
Annual Precip
48.4"
Annual Snowfall
9.5"
Extreme Heat Days
39
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
4,178
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Posey County
Climate Verdict
Posey County has a mild, with an average annual temperature of 56.3°F, moderately wet with 48.4 inches of annual precipitation, occasional hot days — 38.900000000000006 per year above 90°F, light snow averaging 9.5 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 33.0°F. summers are warm — July averages 77.7°F. The 45°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
The moderate temperatures support hiking, cycling, and camping comfortably in spring, summer, and fall.
Regional Context
Posey County is 4.0°F warmer than the Indiana statewide average of 52.4°F, it is somewhat wetter than average for Indiana, the county experiences 19.348511904761914 more extreme heat days than the state average.
Climate Profile
About Posey County Weather
Subtropical heat in Indiana
Posey County averages 56.3°F, making it one of the warmer spots compared to the national median. It experiences a humid climate with 48.4 inches of annual precipitation.
One of Indiana’s hottest counties
The county is over four degrees warmer than the Indiana state average of 52.2°F. It represents the extreme southern climate of the state, with significantly more 90°F days than northern regions.
Hotter than its neighbors
Posey experiences 39 days of extreme heat, far more than neighboring Perry or Pike counties. While temperatures are similar, its summer peaks are more intense than almost anywhere else in the state.
Long summers and short winters
The July average reaches 77.7°F with 39 days of extreme heat per year. Winters are mild, averaging 35.5°F with less than 10 inches of annual snowfall.
Manage the extreme heat
With over five weeks of 90°F weather, reliable air conditioning and attic insulation are critical. Residents should also maintain exterior surfaces to withstand the 48.4 inches of annual rainfall.
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.