Conejos County Climate
Conejos County, Colorado
Avg Annual Temp
43.8°F
Annual Precip
7.8"
Annual Snowfall
29.7"
Extreme Heat Days
1.1
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Conejos County Weather
Conejos: High Altitude, Dry Climate
At 43.8°F, Conejos County runs about 5.7 degrees colder than the U.S. median of 49.5°F, reflecting its high-elevation San Luis Valley location. The county receives just 7.8 inches of annual precipitation—nearly half the national median of 15.2 inches—making it one of Colorado's driest regions. This high-altitude, semi-arid classification defines the southern Colorado uplands.
Conejos: Dry and Cool in Southern Colorado
Conejos County's 43.8°F average is 2.2 degrees below Colorado's state average of 46.0°F, while its 7.8 inches of precipitation rank among the state's lowest at barely half the state average. This reflects the county's position in the rain shadow of the San Juan Mountains, where moisture-bearing westerly winds are wrung dry before reaching the valley. The combination of elevation and aridity creates a unique climate zone.
Driest Valley in South-Central Colorado
Conejos County is notably drier than neighboring Costilla County (9.4 inches) and Huerfano County to the east, which sit at similar elevations but receive more precipitation. Its 43.8°F average matches Costilla County almost exactly, reflecting their shared San Luis Valley setting. Both counties are substantially cooler than the plains-bordering counties of Las Animas and Pueblo to the northeast.
Extreme Dry, Rare Heat, Moderate Snow
Conejos County experiences just 1 day per year above 90°F—a nearly heat-free climate—with July averaging 64.9°F and January dropping to 19.9°F. Annual snowfall totals 29.7 inches, moderate for a mountain valley but concentrated in winter months from October through April. The dry air and high elevation create intense solar radiation despite cool temperatures, making UV protection essential year-round.
Manage Extreme Dryness and UV Exposure
Residents face unique challenges from 7.8 inches of annual precipitation: wells require careful management, landscaping demands drought-resistant plants, and indoor air needs humidification during winter heating season. The intense high-altitude sun (despite cool temperatures) requires sunscreen and eye protection even in winter, and outdoor recreation thrives nearly year-round except during snow events. Winter driving conditions can deteriorate rapidly when snow does fall; keep emergency supplies handy from October through April.
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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.