Denver County Climate
Denver County, Colorado
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
51.7°F
Annual Precip
16.0"
Annual Snowfall
41.3"
Extreme Heat Days
46
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6a
Minimum winter temperature range for plant survival
3,056
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Denver County
Climate Verdict
Denver County has a mild, with an average annual temperature of 51.7°F, semi-arid conditions with only 16.0 inches of annual precipitation, occasional hot days — 46.349999999999994 per year above 90°F, moderate snowfall of 41.3 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 32.8°F. summers are warm — July averages 74.9°F. The 42°F seasonal variation provides noticeable but manageable change. December is typically the coldest month and July the warmest.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Denver County is 5.8°F warmer than the Colorado statewide average of 45.9°F, the county experiences 19.733965734441927 more extreme heat days than the state average.
Climate Profile
About Denver County Weather
Denver: Mile-High City, Moderate Warmth
At 51.7°F, Denver County is approximately 2.2 degrees warmer than the U.S. median of 49.5°F, placing it in the warmer tier of American counties. Its 16.0 inches of annual precipitation exactly matches the national median, making Denver climatically representative of the continental United States despite its high elevation. This temperate high-altitude climate defines the Front Range metro area.
Denver: Warmer Than Most Colorado Counties
Denver County's 51.7°F average ranks it among Colorado's three warmest counties, sitting 5.7 degrees above the state average of 46.0°F. The county's 16.0 inches of precipitation match the state average exactly, providing balanced moisture for a high-elevation urban area. Denver's location in the South Platte River valley at 5,280 feet elevation creates a temperate micro-climate.
Urban Warmth on the Front Range
Denver County is warmer than adjacent Adams, Boulder, and Douglas counties (which range 1–2 degrees cooler due to elevation and urban heat island effects being less pronounced). Its 46 extreme heat days sit between plains extremes (86 in Crowley) and mountain coolness (0 in Clear Creek), reflecting its Front Range location. Compared to all regional neighbors, Denver's urban area creates a distinct warmth island.
Sunny Winters, Moderate Summers, Dry Air
Denver County experiences 46 days per year above 90°F, with July averaging 74.9°F and January rising to 32.8°F—the warmest January average of any county in this dataset. Annual snowfall totals 41.3 inches, moderate for a Front Range location, and melts quickly due to intense March–April sunshine. The combination of frequent sunshine, low humidity, and rapid temperature swings is Denver's defining climate trait.
Manage Altitude and Intense Sun Year-Round
Residents must invest in good air conditioning for 46 annual days above 90°F and adequate heating for mild winters (32.8°F average in January); the real challenge is the intense high-altitude sun and low humidity that cause rapid heat loss. Sunscreen and eye protection are essential every season due to high UV exposure; indoor spaces require humidification during winter heating season. Outdoor activities thrive most of the year; plan around infrequent but rapid snowmelt and spring wind events.
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.