Jefferson County Climate
Jefferson County, Kansas
Avg Annual Temp
54.4°F
Annual Precip
38.4"
Annual Snowfall
14.1"
Extreme Heat Days
44
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Jefferson County Weather
Typical Midwestern Temperature and Precipitation
Jefferson County averages 54.4°F annually, which aligns closely with the U.S. national median. Its 38.4 inches of annual precipitation makes it much wetter than the national average for the Great Plains.
Representing the State Average
The county's 54.4°F average temperature is nearly identical to the Kansas state average of 54.8°F. It is one of the state's wetter regions, exceeding the state precipitation average by over 8 inches.
Slightly Warmer than Jackson County
Jefferson is roughly two degrees warmer on average than neighboring Jackson County. It shares a similar moisture profile, receiving 38.4 inches of rain compared to Jackson's 37.4 inches.
Balanced Heat and Moderate Snow
Residents see 44 days of extreme heat annually, with July temperatures averaging 78.7°F. Winter delivers a moderate 14.1 inches of snow, and temperatures average 31.0°F from December through February.
Prepare for Humidity and Rain
The high precipitation of 38.4 inches suggests a need for reliable rain gear and moisture-resistant building materials. Summers are warm but manageable with 44 days above 90°F, requiring standard air conditioning.
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.