San Juan County Climate
San Juan County, New Mexico
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
52.3°F
Annual Precip
9.2"
Annual Snowfall
8.8"
Extreme Heat Days
53
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
3,148
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: San Juan County
Climate Verdict
San Juan County has a mild, with an average annual temperature of 52.3°F, arid conditions receiving just 9.2 inches of precipitation annually, occasional hot days — 52.787499999999994 per year above 90°F, light snow averaging 8.8 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 30.6°F. summers are warm — July averages 75.4°F. The 45°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for San Juan County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
San Juan County closely matches the New Mexico statewide average temperature of 54.8°F, it is somewhat drier than average for New Mexico.
Climate Profile
About San Juan County Weather
Arid High Desert Extremes
San Juan County averages 52.3°F, falling slightly below the national median temperature. It is exceptionally dry, receiving only 9.2 inches of annual precipitation.
Drier Than the State Average
San Juan's 9.2 inches of annual precipitation is well below the New Mexico average of 14.0 inches. Its 52.3°F annual temperature is also slightly cooler than the state average of 54.8°F.
Cooler and Drier Than the South
San Juan is much drier than neighboring McKinley County, which receives 12.8 inches of rain. It also experiences 53 heat days, less than half of the 111 days recorded in southern Luna County.
Moderate Summers and Dry Winters
July averages 75.4°F with roughly 53 days of extreme heat per year. Winters are cold and dry, averaging 32.4°F with only 8.8 inches of annual snowfall.
Prioritize Water Conservation
With only 9.2 inches of rain, xeriscaping and water efficiency are essential for every household. Prepare for 53 days of heat above 90°F, but remember that winter nights frequently drop below freezing.
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.