Washington County Climate
Washington County, Indiana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
55.4°F
Annual Precip
46.9"
Annual Snowfall
14.1"
Extreme Heat Days
25
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
3,900
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Washington County
Climate Verdict
Washington County has a mild, with an average annual temperature of 55.4°F, moderately wet with 46.9 inches of annual precipitation, occasional hot days — 24.5 per year above 90°F, light snow averaging 14.1 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 32.7°F. summers are warm — July averages 75.7°F. The 43°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
Washington County is 3.0°F warmer than the Indiana statewide average of 52.4°F, it is somewhat wetter than average for Indiana.
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 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.