Sioux County Climate
Sioux County, Nebraska
Avg Annual Temp
46.2°F
Annual Precip
16.5"
Annual Snowfall
48.6"
Extreme Heat Days
28.983333333333334
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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 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.