Mesa County Climate
Mesa County, Colorado
Avg Annual Temp
50.1°F
Annual Precip
13.6"
Annual Snowfall
27.8"
Extreme Heat Days
52.44444444444444
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Mesa County Weather
Mesa County mirrors U.S. average temperature
At 50.1°F annually, Mesa County nearly matches the U.S. median of 50.5°F, placing it in a temperate semi-arid climate zone. The county receives 13.6 inches of precipitation annually—notably drier than the national median—making it a semi-desert environment.
Warmest Colorado county on the western slope
Mesa County's 50.1°F average runs 4.1 degrees above Colorado's state average of 46.0°F, positioning it among the state's warmest. Its location on Colorado's western slope and lower elevation explain this elevated warmth.
Warmest and driest of the west slope
Mesa County averages 50.1°F and receives just 13.6 inches of precipitation—making it drier than Larimer County (16.7 inches) and nearly equal to Logan County's warmth. It's notably warmer and drier than neighboring Mineral County (38.0°F, 15.3 inches).
Hot summers, mild winters, 52 heat days
July averages 74.5°F with 52 days reaching 90°F annually, creating intense summer heat across the season. January averages 26.9°F, and the county receives only 27.8 inches of annual snowfall—among the lowest in Colorado.
Air conditioning critical, drought management urgent
With 52 annual days hitting 90°F, robust air conditioning is essential; residents should prioritize system maintenance and efficiency. Extreme aridity (13.6 inches annual precipitation) demands aggressive water conservation, drought-resistant landscaping, and wildfire preparedness.
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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.