Jackson County Climate
Jackson County, Colorado
Avg Annual Temp
36.0°F
Annual Precip
17.2"
Annual Snowfall
67.1"
Extreme Heat Days
0.3333333333333333
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Jackson County Weather
Jackson ranks among America's coldest counties
Jackson County's 36.0°F annual average runs 25.7 degrees below the U.S. median of 61.7°F, making it one of the nation's perpetually frigid regions. With 17.2 inches of annual precipitation and zero extreme heat days, Jackson maintains a high-altitude alpine climate year-round.
Colorado's coldest county climate
At 36.0°F, Jackson County ranks as Colorado's coldest, running 10 degrees below the state average of 46.0°F. No other Colorado county sustains such consistently frigid temperatures across all seasons.
Colder than Gunnison and Hinsdale alike
Jackson (36.0°F) edges out Gunnison (36.8°F) as the state's coldest, though both sit in the same extreme-cold tier with zero summer extreme heat days. Jackson's 67.1 inches of annual snow is slightly less than Gunnison's 88.1, suggesting higher elevation with less moisture.
Perpetual winter conditions, no summer heat
Jackson's January averages 16.0°F while July peaks at just 57.6°F, creating a modest 41-degree annual range with zero days above 90°F. The county receives 67.1 inches of snow annually, establishing a permanent winter landscape for much of the calendar year.
Winter survival is the baseline requirement
Jackson residents must commit to commercial-grade snow removal, backup generators, and heating systems rated for sustained sub-zero conditions. Summer recreation windows compress into July-August; all outdoor projects, resupply, and maintenance must front-load into this brief window to avoid winter delays.
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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.