San Miguel County Climate
San Miguel County, Colorado
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
43.4°F
Annual Precip
18.4"
Annual Snowfall
88.9"
Extreme Heat Days
5
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5b
Minimum winter temperature range for plant survival
1,517
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: San Miguel County
Climate Verdict
San Miguel County has a cool, averaging 43.4°F annually, semi-arid conditions with only 18.4 inches of annual precipitation, rare extreme heat with only 5.400000000000001 days above 90°F annually, heavy winter snowfall averaging 88.9 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 23.5°F. summers are pleasantly cool with July averaging 64.8°F. The 41°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
San Miguel County closely matches the Colorado statewide average temperature of 45.9°F, it is somewhat wetter than average for Colorado, the county experiences 21.216034265558065 fewer extreme heat days than the state average.
Climate Profile
About San Miguel County Weather
High country: cold alpine climate with steady snow
San Miguel County's 43.4°F annual average is 3.1°F cooler than the national median of 46.5°F, placing it in the cool alpine continental zone typical of Colorado's mountain counties. With 18.4 inches of annual precipitation and 88.9 inches of snowfall, San Miguel captures significant winter moisture while maintaining moderate overall precipitation.
Colorado mountain county with steady snow profile
San Miguel's 43.4°F ranks it among Colorado's cooler counties, sitting 2.6°F below the state average of 46.0°F, with substantial snowfall (88.9 inches) typical of the southwestern mountains. The county's 8,000+ foot elevation places it firmly in Colorado's alpine climate zone.
Snow bridge between high and lower peaks
San Miguel's 43.4°F and 88.9 inches of snow fall between Routt County's extreme 142.9 inches to the north and San Juan County's 172.6 inches to the south. Its temperature sits between Rio Blanco's 45.0°F to the northeast and the much colder San Juan's 34.7°F to the south.
Cool summers, long winters, substantial snowfall
San Miguel records only 5 extreme heat days annually, while winters average 24.8°F with January at 23.5°F and July reaching 64.8°F. Summer temperatures average 62.4°F with 88.9 inches of annual snowfall creating an extended 7+ month winter/shoulder season.
Mountain living: heating and snow are year-round
With 88.9 inches of annual snowfall and winter temperatures near 25°F, residents need robust heating systems, advanced weatherproofing, and professional snow management for most of the year. The only 5 extreme heat days annually means air conditioning is unnecessary, but summer planning around avalanche terrain and mountain weather unpredictability is essential.
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.