Atchison County Climate
Atchison County, Missouri
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
51.1°F
Annual Precip
—
Annual Snowfall
—
Extreme Heat Days
26
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5b
Minimum winter temperature range for plant survival
3,402
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Atchison County
Climate Verdict
Atchison County has a mild, with an average annual temperature of 51.1°F, occasional hot days — 25.7 per year above 90°F. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 24.2°F. summers are warm — July averages 75.3°F. Residents experience a substantial 51°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Atchison County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Atchison County is 3.8°F cooler than the Missouri statewide average of 54.9°F.
Climate Profile
About Atchison County Weather
Below the National Average Temperature
Atchison County's annual average of 51.1°F is roughly two degrees cooler than the national median. This northern outpost experiences a more brisk climate than much of the central United States.
Missouri's Coldest Regional Pocket
The county ranks among the coldest in the state, sitting nearly four degrees below the Missouri average of 54.9°F. Its far northwest position exposes it to cooler continental air masses.
The State's Cooler Northwest Corner
Atchison is the coolest among its regional peers, averaging 0.5 degrees less than Adair County. While local precipitation data is limited, the temperature profile remains consistently lower than central Missouri.
Frigid Winters and Sunny Summers
January is particularly cold here with an average temperature of 24.2°F. Despite the northern latitude, the county still records 26 days of extreme heat above 90°F each summer.
Winter Resilience and Heat Prep
The low winter average of 26.8°F requires heavily insulated housing and cold-weather gear. Even in this cooler region, residents need functional air conditioning for the 26 days of extreme summer heat.
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.