Doña Ana County Climate
Doña Ana County, New Mexico
Avg Annual Temp
61.3°F
Annual Precip
10.0"
Annual Snowfall
1.4"
Extreme Heat Days
103.275
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Doña Ana County Weather
Southern Heat in Doña Ana
Doña Ana County averages 61.3°F annually, placing it among the warmest counties in the nation. This desert region is very dry, with only 10.0 inches of annual precipitation.
The Warmest Corner of the State
With a 61.3°F annual average, this county is significantly warmer than the New Mexico average of 54.8°F. It is a leader in extreme heat days for the state.
Minimal Rainfall in the Chihuahuan Desert
The county receives just 10.0 inches of precipitation, well below the state average of 14.0 inches. It is one of the driest inhabited regions in New Mexico.
A Century of Triple-Digit Days
Summer dominates with a staggering 103 days reaching 90°F or higher. Winters are very mild, with only 1.4 inches of snow and a January average of 41.8°F.
Sun Protection and Water Conservation
Extreme heat safety and high-performance cooling are essential for the 79.6°F summer average. Winter gear is rarely needed as snowfall is almost non-existent.
Frequently Asked Questions
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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.