Decatur County Climate
Decatur County, Kansas
Avg Annual Temp
52.1°F
Annual Precip
21.5"
Annual Snowfall
23.0"
Extreme Heat Days
55.1
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Decatur County Weather
Cool High Plains Living
Decatur's 52.1°F average temperature sits below the national median. This northwestern county experiences a semi-arid climate with only 21.5 inches of precipitation.
Cooler and Drier Than Kansas
The county is 2.7 degrees cooler than the Kansas state average. It is also one of the driest counties in the state, receiving 9 inches less rain than average.
Icy Winters Among Neighbors
Decatur experiences much harsher winters than southern counties, recording 23 inches of annual snow. It is drier and snowier than Doniphan County to the east.
Drastic Seasonal Shifts
January is cold with a 28.8°F average, while July heats up to 77.4°F. Despite the cooler overall average, the county still sees 55 days of 90-degree heat.
Winterize for Heavy Snow
Residents need heavy-duty winter gear and snow removal tools for the 23-inch annual average. Low rainfall also makes water-conscious landscaping a necessity for homeowners.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.