White County Climate
White County, Illinois
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
55.0°F
Annual Precip
48.3"
Annual Snowfall
11.7"
Extreme Heat Days
38
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
3,921
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: White County
Climate Verdict
White County has a mild, with an average annual temperature of 55.0°F, moderately wet with 48.3 inches of annual precipitation, occasional hot days — 37.9 per year above 90°F, light snow averaging 11.7 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 31.2°F. summers are warm — July averages 76.7°F. The 46°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
White County closely matches the Illinois statewide average temperature of 52.8°F, it is also noticeably wetter, receiving 6.5 inches more precipitation than the state average.
Climate Profile
About White County Weather
Warm and remarkably wet
White County averages 55.0°F, placing it above the national median for annual temperature. Its high precipitation of 48.3 inches makes it one of the wettest spots in the Midwestern United States.
High ranking for heat and rain
The county's average temperature of 55.0°F sits comfortably above the state average of 52.8°F. Its rainfall total of 48.3 inches significantly exceeds the state average of 41.7 inches.
Wettest in the local region
White County's 48.3 inches of rain surpasses even Wayne County's high totals. While it shares the southern heat, it is slightly cooler than Wayne, with an average of 55.0°F.
Steamy summers and easy winters
The county experiences 38 days of extreme heat and a July average of 76.7°F. Winter remains mild with only 11.7 inches of snow, allowing for easier travel than in northern Illinois.
Manage moisture and summer sun
Sump pumps and gutter maintenance are vital to handle the 48.3 inches of annual rainfall. Residents should also plan for 38 days of 90-degree weather with reliable indoor cooling.
Frequently Asked Questions
What is the average temperature in White County?
How much rain does White County get?
Does it snow in White County?
How hot does White County get in summer?
How cold are winters in White County?
Track your own weather in White 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.