Rio Arriba County Weather in December
Average highs run from 44°F on December 1 to 39°F on December 31, and lows from 13°F to 8°F. Normal precipitation for the month is 0.94 in over about 6 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 40°F
- Average low
- 10°F
- Precipitation
- 0.94 in
- Snowfall
- 9.6 in
- Record high
- 64°FDec 27, 1980
- Record low
- -13°FDec 9, 1978
- Chance of a freeze
- 100%
- Daylight
- 9 h 51 min to 9 h 42 min
- Cloud cover
- 52%
- Humidity
- 71%
- Dew point
- 15°F
- Wind
- 7.4 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Dec 1 | 44°F | 13°F | 61°F 1926 | 5°F 1991 | 19% | 10% |
| Dec 2 | 44°F | 13°F | 61°F 2008 | 5°F 1991 | 19% | 10% |
| Dec 3 | 43°F | 13°F | 59°F 1977 | 1°F 2009 | 19% | 10% |
| Dec 4 | 43°F | 13°F | 60°F 1918 | -2°F 2009 | 19% | 11% |
| Dec 5 | 43°F | 12°F | 60°F 1939 | -1°F 2011 | 19% | 11% |
| Dec 6 | 42°F | 12°F | 58°F 1939 | -3°F 2011 | 19% | 11% |
| Dec 7 | 42°F | 12°F | 61°F 1981 | -2°F 1978 | 19% | 11% |
| Dec 8 | 42°F | 12°F | 60°F 1981 | -8°F 1978 | 19% | 11% |
| Dec 9 | 41°F | 12°F | 60°F 1981 | -13°F 1978 | 20% | 12% |
| Dec 10 | 41°F | 11°F | 58°F 1981 | -3°F 1951 | 20% | 12% |
| Dec 11 | 41°F | 11°F | 59°F 1939 | 2°F 1919 | 20% | 12% |
| Dec 12 | 40°F | 11°F | 62°F 1933 | -9°F 1961 | 20% | 12% |
| Dec 13 | 40°F | 11°F | 57°F 1942 | -4°F 1931 | 20% | 12% |
| Dec 14 | 40°F | 10°F | 56°F 1950 | 2°F 1931 | 20% | 12% |
| Dec 15 | 40°F | 10°F | 58°F 2016 | 2°F 1992 | 20% | 12% |
| Dec 16 | 40°F | 10°F | 57°F 1980 | 0°F 1927 | 20% | 13% |
| Dec 17 | 39°F | 10°F | 60°F 1980 | -3°F 1996 | 20% | 13% |
| Dec 18 | 39°F | 10°F | 59°F 1939 | -11°F 1996 | 20% | 13% |
| Dec 19 | 39°F | 10°F | 59°F 1942 | 0°F 1927 | 20% | 13% |
| Dec 20 | 39°F | 9°F | 59°F 1939 | 2°F 1928 | 20% | 13% |
| Dec 21 | 39°F | 9°F | 58°F 2025 | -1°F 1967 | 20% | 13% |
| Dec 22 | 39°F | 9°F | 59°F 2025 | -3°F 1989 | 20% | 13% |
| Dec 23 | 39°F | 9°F | 57°F 2025 | -10°F 1990 | 20% | 13% |
| Dec 24 | 39°F | 9°F | 58°F 2025 | -10°F 1924 | 20% | 13% |
| Dec 25 | 39°F | 9°F | 55°F 2025 | -9°F 1924 | 20% | 13% |
| Dec 26 | 39°F | 9°F | 61°F 1980 | 0°F 1918 | 20% | 13% |
| Dec 27 | 39°F | 8°F | 64°F 1980 | 0°F 1939 | 20% | 13% |
| Dec 28 | 39°F | 8°F | 58°F 1980 | 0°F 1983 | 20% | 13% |
| Dec 29 | 39°F | 8°F | 54°F 2024 | 0°F 1982 | 20% | 13% |
| Dec 30 | 39°F | 8°F | 55°F 2017 | 1°F 1990 | 20% | 13% |
| Dec 31 | 39°F | 8°F | 58°F 1980 | -4°F 2010 | 20% | 13% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 7:00 AM, sunset 4:51 PM
- December 31
- sunrise 7:19 AM, sunset 5:01 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00292837 (El Vado Dam), public domain. Records: NOAA GHCN-Daily, station USC00295084, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.