Thomas County Climate
Thomas County, Kansas
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
51.8°F
Annual Precip
20.7"
Annual Snowfall
21.4"
Extreme Heat Days
58
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6a
Minimum winter temperature range for plant survival
3,381
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Thomas County
Climate Verdict
Thomas County has a mild, with an average annual temperature of 51.8°F, semi-arid conditions with only 20.7 inches of annual precipitation, occasional hot days — 58.1 per year above 90°F, moderate snowfall of 21.4 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 29.0°F. summers are warm — July averages 76.7°F. The 48°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Thomas County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Thomas County closely matches the Kansas statewide average temperature of 54.8°F, it is also noticeably drier, receiving 9.6 inches less precipitation than the state average.
Climate Profile
About Thomas County Weather
High Plains climate in Thomas County
Thomas County's 51.8°F average temperature sits slightly below the national median for a semi-arid High Plains climate. The county receives only 20.7 inches of annual precipitation, making it significantly drier than the national average.
Cooler and drier than the Kansas average
With an annual average of 51.8°F, Thomas is one of the cooler counties in Kansas compared to the state average of 54.8°F. It also ranks among the top tier for snowfall in the state, averaging 21.4 inches per year.
A dry outlier among regional neighbors
The county's 20.7 inches of rain is slightly higher than western neighbor Wallace but significantly drier than eastern Kansas. The average temperature is lower than neighboring Trego County to the southeast.
Sweeping temperature swings across the seasons
July highs average 76.7°F, but the county still endures 58 extreme heat days per year where temperatures top 90°F. Winters are brisk with a December-to-February average of 30.3°F and 21.4 inches of annual snow.
Planning for snow and summer heat
High snow totals require reliable snow removal equipment and winterized vehicles for rural travel. Summer cooling costs rise during the 58 extreme heat days, so efficient HVAC systems are essential for residents.
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.