Rio Arriba County Climate
Rio Arriba County, New Mexico
Avg Annual Temp
46.8°F
Annual Precip
14.8"
Annual Snowfall
37.6"
Extreme Heat Days
16.72
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Rio Arriba County Weather
Chilly Northern Mountain Climate
Rio Arriba County is quite cold by national standards, with an annual average temperature of 46.8°F. The county receives 37.6 inches of snow annually, making it a distinctly wintry region.
Among the Coldest in NM
Rio Arriba's 46.8°F average is much lower than the state's 54.8°F baseline. Despite its cold temperatures, its 14.8 inches of annual precipitation is very close to the state average of 14.0 inches.
Less Snow Than Neighboring Mora
Rio Arriba's 37.6 inches of snow is significant but trails far behind Mora County's 62.1 inches. It remains much cooler than southern San Juan County, averaging only 17 days of extreme heat.
Harsh Winters and Brief Summers
Winters are cold with a 28.0°F average, while July temperatures peak at a mild 68.3°F. Extreme heat is rare here, occurring only 17 days per year on average.
Winterize Your Home and Car
With a winter average of 28.0°F and 37.6 inches of snow, freezing pipes and road safety are major considerations. You can save on cooling costs, as temperatures rarely exceed 90°F.
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.