Rock County Climate
Rock County, Nebraska
NOAA NCEI 1991-2020 Climate NormalsAvg 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
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
2,676
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Rock County
Climate Verdict
Rock County has a cool, averaging 46.7°F annually, moderate rainfall of 27.1 inches per year, occasional hot days — 26 per year above 90°F, moderate snowfall of 41.5 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 21.2°F. summers are warm — July averages 73.1°F. Residents experience a substantial 52°F difference between winter and summer.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Rock County is 3.0°F cooler than the Nebraska statewide average of 49.7°F.
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 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.