Jefferson County Climate
Jefferson County, Kansas
NOAA NCEI 1991-2020 Climate NormalsAvg 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
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
4,001
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Jefferson County
Climate Verdict
Jefferson County has a mild, with an average annual temperature of 54.4°F, moderate rainfall of 38.4 inches per year, occasional hot days — 44 per year above 90°F, light snow averaging 14.1 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 28.0°F. summers are warm — July averages 78.7°F. Residents experience a substantial 51°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Jefferson County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Jefferson County closely matches the Kansas statewide average temperature of 54.8°F, it is also noticeably wetter, receiving 8.1 inches more precipitation than the state average.
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 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.