Sioux County Climate
Sioux County, Nebraska
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
46.2°F
Annual Precip
16.5"
Annual Snowfall
48.6"
Extreme Heat Days
29
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
2,269
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Sioux County
Climate Verdict
Sioux County has a cool, averaging 46.2°F annually, semi-arid conditions with only 16.5 inches of annual precipitation, occasional hot days — 28.983333333333334 per year above 90°F, moderate snowfall of 48.6 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 25.4°F. summers are warm — July averages 70.9°F. The 46°F seasonal variation provides noticeable but manageable change. December is typically the coldest month and July the warmest.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Sioux County is 3.5°F cooler than the Nebraska statewide average of 49.7°F, it is also noticeably drier, receiving 9.4 inches less precipitation than the state average.
Climate Profile
About Sioux County Weather
A cool and arid highland climate
Sioux County is significantly cooler than the national median with an annual average temperature of 46.2°F. It is also quite dry, receiving only 16.5 inches of precipitation annually. This high-plains environment creates a distinct climate profile compared to the rest of the country.
One of Nebraska's coolest counties
At 46.2°F, Sioux County sits well below the Nebraska state average of 49.7°F. It represents the cooler, western frontier of the state's weather patterns. This temperature gap is driven by higher elevation and a more northern latitude.
Drastically drier than eastern peers
Sioux County receives 16.5 inches of precipitation, which is less than half of what Washington County gets in the east. Even central neighbors like Sherman are nearly 11 inches wetter per year. Temperatures here are also much cooler than the state's southern border counties.
Long winters and heavy snow
The county endures 48.6 inches of annual snowfall, making it one of the snowiest regions in Nebraska. While summers reach a July average of 70.9°F, the county still sees 29 extreme heat days annually. Winter averages linger at a chilly 25.9°F during the December to February corridor.
Equip for heavy snow and dry air
Residents need high-capacity snow removal tools to manage the nearly 50 inches of annual accumulation. Water conservation is vital given the low 16.5-inch precipitation average. Winter vehicle kits and home weatherization are essential for surviving the cold, snowy winters.
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.