Ross County Climate
Ross County, Ohio
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
53.5°F
Annual Precip
—
Annual Snowfall
—
Extreme Heat Days
22
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
3,538
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Ross County
Climate Verdict
Ross County has a mild, with an average annual temperature of 53.5°F, occasional hot days — 21.7 per year above 90°F. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 30.1°F. summers are warm — July averages 74.5°F. The 44°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Ross County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Ross County closely matches the Ohio statewide average temperature of 51.5°F.
Climate Profile
About Ross County Weather
Ross County Matches the National Temperature Median
With an average annual temperature of 53.5°F, Ross County aligns closely with the United States median. This humid continental region experiences warmer overall conditions than much of the Great Lakes area.
Warmer Than the Average Ohio County
Ross County is notably warmer than the state average of 51.5°F. Its 53.5°F annual mean places it among the warmer southern half of Ohio's 88 counties.
A Warm Bridge Between North and South
Ross County’s 53.5°F average is warmer than northern neighbors like Richland at 50.5°F. However, it remains slightly cooler than Scioto County further south, which averages 54.9°F.
Extended Heat and Moderate Winter Temps
The county faces 22 extreme heat days annually where temperatures top 90°F. Winter stays slightly milder than the state average, with a January mean of 30.1°F.
Preparing for Significant Summer Heat Loads
Residents should invest in robust air conditioning systems to navigate the three weeks of 90-degree weather. While snowfall data is limited, the 32.8°F winter average suggests a mix of freezing and thawing cycles.
Frequently Asked Questions
What is the average temperature in Ross County?
How hot does Ross County get in summer?
How cold are winters in Ross County?
Track your own weather in Ross 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.