Fulton County Climate
Fulton County, Illinois
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
49.3°F
Annual Precip
38.6"
Annual Snowfall
19.2"
Extreme Heat Days
16
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6a
Minimum winter temperature range for plant survival
3,044
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Fulton County
Climate Verdict
Fulton County has a cool, averaging 49.3°F annually, moderate rainfall of 38.6 inches per year, rare extreme heat with only 16.4 days above 90°F annually, light snow averaging 19.2 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 21.9°F. summers are warm — July averages 73.0°F. Residents experience a substantial 51°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Fulton County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Fulton County is 3.5°F cooler than the Illinois statewide average of 52.8°F, it is somewhat drier than average for Illinois.
Climate Profile
About Fulton County Weather
Colder Than the National Median
Fulton County's 49.3°F annual average temperature is several degrees below the national median. It experiences a rigorous continental climate with substantial seasonal variation.
Chilly Rank Among Illinois Counties
Averaging 49.3°F, Fulton is one of the cooler counties in Illinois, sitting well below the 52.8°F state average. Its northern-latitude weather patterns bring sharper winters.
Drier and Cooler Than Neighbors
The county receives 38.6 inches of rain annually, which is below the Illinois state average of 41.7 inches. It is notably drier than counties to its south and east.
Cold Winters and Managed Heat
January temperatures average a cold 21.9°F, accompanied by 19.2 inches of annual snowfall. Extreme heat is less frequent here, with only 16 days reaching 90°F or more.
Focus on Winter Home Prep
Winterization is the priority here, as January lows require reliable heating systems and pipe protection. Outdoor recreation is best planned for the mild 71.3°F summer average.
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.