Rock County Climate
Rock County, Nebraska
Avg Annual Temp
46.7°F
Annual Precip
27.1"
Annual Snowfall
41.5"
Extreme Heat Days
26
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Rock County Weather
A Distinctly Chilly Northern Profile
Rock County averages just 46.7°F annually, placing it well below the national median for temperature. This cool climate is typical of the northern Nebraska Sandhills, where winters are long and rigorous.
Colder Than the Nebraska Average
The county's 46.7°F average temperature sits three degrees below the state average of 49.7°F. While the state averages 25.9 inches of moisture, Rock County sees slightly more at 27.1 inches annually.
Heavier Snowfall Than Southern Peers
Rock County faces 41.5 inches of annual snowfall, nearly double what some southern Nebraska counties experience. Despite the cold, it sees 26 extreme heat days, proving that summer still packs a punch.
Brisk Winters and Mild Summers
Winter temperatures average a cold 23.2°F, with January lows often bottoming out near 21.2°F. Summer provides relief with a July average of 73.1°F and a manageable summer mean of 70.4°F.
Winterize for Significant Snowfall
Residents must invest in heavy-duty snow removal equipment to manage the 41.5 inches of annual snow. High-performance home insulation is a necessity to combat the sustained sub-freezing winter averages.
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.