Natrona County Climate
Natrona County, Wyoming
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
45.7°F
Annual Precip
13.1"
Annual Snowfall
62.2"
Extreme Heat Days
28
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
2,182
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Natrona County
Climate Verdict
Natrona County has a cool, averaging 45.7°F annually, arid conditions receiving just 13.1 inches of precipitation annually, occasional hot days — 28.185714285714287 per year above 90°F, heavy winter snowfall averaging 62.2 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 24.7°F. summers are warm — July averages 70.9°F. The 46°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Natrona County closely matches the Wyoming statewide average temperature of 43.8°F.
Climate Profile
About Natrona County Weather
A Dry and Windy Interior
Natrona County averages 45.7°F annually, staying well below the national median in a semi-arid climate. It receives just 13.1 inches of annual precipitation, making it one of the drier populated regions in the country.
Warmer than the State Baseline
With an average of 45.7°F, Natrona is nearly two degrees warmer than the 43.8°F Wyoming average. This puts Casper and the surrounding areas in the more temperate bracket of the state.
The Center of the State
Natrona County is slightly warmer than Johnson County (45.1°F) to the north. Its precipitation levels are very similar to neighboring Hot Springs County, which receives 13.3 inches of moisture.
Heavy Snow and Summer Peaks
The county sees a significant 62.2 inches of annual snowfall, one of the higher totals in the region. Summers bring 28 days of extreme heat, with July temperatures averaging a warm 70.9°F.
Manage the Snow Load
Property owners must be prepared for the heavy 62.2-inch annual snow accumulation and cold 24.7°F January lows. Air conditioning is also necessary for the nearly one month of extreme 90-degree summer days.
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.