Clark County Climate
Clark County, Nevada
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
66.8°F
Annual Precip
6.9"
Annual Snowfall
8.0"
Extreme Heat Days
131
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
9a
Minimum winter temperature range for plant survival
6,661
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Clark County
Climate Verdict
Clark County has a warm, averaging 66.8°F year-round, arid conditions receiving just 6.9 inches of precipitation annually, extreme heat exposure with 131.3125 days per year above 90°F, light snow averaging 8.0 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 46.9°F. summers are hot, with July averaging 89.4°F. The 42°F seasonal variation provides noticeable but manageable change. December is typically the coldest month and July the warmest.
Outdoor & Gardening Guidance
Summer outdoor activities should be planned for early morning or evening to avoid extreme heat.
Regional Context
Clark County is 14.7°F warmer than the Nevada statewide average of 52.0°F, the county experiences 74.24693842449261 more extreme heat days than the state average.
Climate Profile
About Clark County Weather
Far warmer than the national average
Clark County averages a warm 66.8°F annually, which is nearly 14 degrees higher than the national median. This subtropical desert climate is defined by its intense solar exposure and low humidity.
Nevada’s heat leader
As the hottest county in the state, Clark’s 66.8°F average towers over the Nevada state average of 52.0°F. It represents the extreme southern end of the state's climate spectrum.
Hotter than the central deserts
Clark is significantly warmer than Esmeralda County to the north, which averages just 53.4°F. While both are dry, Clark's summer intensity is unmatched in the region.
Extreme heat dominates the calendar
The county endures a staggering 131 days per year above 90°F. July is particularly intense with an average temperature of 89.4°F, while winters remain mild and mostly snow-free.
Climate control is a necessity
High-performance HVAC systems are critical for managing over four months of extreme heat. Residents must prioritize hydration and sun protection during the long, 131-day hot season.
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.