Morgan County Climate
Morgan County, Illinois
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
52.8°F
Annual Precip
40.3"
Annual Snowfall
16.2"
Extreme Heat Days
32
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6a
Minimum winter temperature range for plant survival
3,622
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Morgan County
Climate Verdict
Morgan County has a mild, with an average annual temperature of 52.8°F, moderately wet with 40.3 inches of annual precipitation, occasional hot days — 31.65 per year above 90°F, light snow averaging 16.2 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 26.8°F. summers are warm — July averages 75.7°F. The 49°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Morgan County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Morgan County closely matches the Illinois statewide average temperature of 52.8°F.
Climate Profile
About Morgan County Weather
The Perfect National Temperature Benchmark
Morgan County’s 52.8°F average annual temperature aligns almost perfectly with the national median for continental climates. Its 40.3 inches of annual rain provides a standard temperate moisture profile.
Mirroring the Illinois State Average
The county perfectly matches the Illinois state average temperature of 52.8°F. Its precipitation of 40.3 inches is slightly lower than the statewide average of 41.7 inches.
Drier and Cooler Than Montgomery
Morgan sees 10 fewer extreme heat days than Montgomery County to the south. It also receives about 2 inches less annual precipitation, making it a slightly more moderate neighbor.
Defined Winters and Hot Summers
January temperatures average 26.8°F, supporting 16.2 inches of annual snowfall across the winter months. Summers are warm, featuring a July average of 75.7°F and 32 days of extreme heat.
Ready Your Snow and Cooling Gear
Residents need both a reliable snow blower for the 16.2 inches of snow and efficient cooling for the 32 days of extreme heat. Multi-season wardrobe planning is essential in this balanced climate.
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.