Washington County Climate
Washington County, Indiana
Avg Annual Temp
55.4°F
Annual Precip
46.9"
Annual Snowfall
14.1"
Extreme Heat Days
24.5
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Washington County Weather
Temperate Conditions in the Heartland
Washington County averages 55.4°F annually, sitting slightly above the national median for temperate zones. The climate is characterized by distinct seasonal transitions and consistent year-round moisture.
Warmer Than the State Baseline
The county's annual average of 55.4°F is over three degrees warmer than the Indiana state average of 52.2°F. This elevated temperature profile reflects its position in the rolling hills of southern Indiana.
Robust Rainfall Compared to Central Indiana
Washington County receives 46.9 inches of precipitation annually, which is three inches more than the state average. This provides a damp environment compared to the drier agricultural plains found further north.
Moderate Snow and Notable Summer Heat
Summer brings 25 days of extreme heat above 90°F, while winters see a moderate 14.1 inches of snowfall. January temperatures hover near freezing with an average of 32.7°F.
Dual Seasonal Preparation is Key
Residents should prepare for nearly a month of 90-degree days with serviced HVAC systems. While snow is moderate at 14.1 inches, basic winter weather gear is still a seasonal necessity.
Frequently Asked Questions
What is the average temperature in Washington County?
How much rain does Washington County get?
Does it snow in Washington County?
How hot does Washington County get in summer?
How cold are winters in Washington County?
Track your own weather in Washington County
Ambient Weather personal weather stations give you hyperlocal climate data.
Sponsored
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.