December weather in Gallup, NM
The average temperature in Gallup in December is 30.1°F (16.1°F–44.1°F). Average precipitation: 0.87 inches. Average snowfall is 5.2 inches.
December is a winter month in Gallup, and is cooler than the annual average of 50.2°F. Daily temperatures swing about 28°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 9h 37m. For travel, December is cold.
Avg High
44.1°F
Avg Low
16.1°F
Precipitation
0.87 in
Snow
5.2 in
December records in Gallup
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 64.0°F (2003) | -2.0°F (2006) | 0.53 in (2007) |
| December 2 | 64.9°F (2003) | -2.0°F (2006) | 0.56 in (2007) |
| December 3 | 61.0°F (2021) | 1.9°F (2018) | 0.10 in (2011) |
| December 4 | 61.0°F (2021) | 1.0°F (2009) | 0.57 in (2014) |
| December 5 | 59.0°F (2021) | 1.9°F (2005) | 0.72 in (2014) |
| December 6 | 64.0°F (2012) | 3.0°F (2011) | 0.09 in (2004) |
| December 7 | 62.1°F (2003) | 7.0°F (2005) | 0.01 in (2018) |
| December 8 | 61.0°F (2015) | 0.0°F (2005) | 0.62 in (2009) |
| December 9 | 59.0°F (2015) | 1.0°F (2013) | 0.17 in (2007) |
| December 10 | 59.0°F (2015) | -9.0°F (2013) | 0.31 in (2021) |
| December 11 | 60.1°F (2015) | -2.9°F (2013) | 0.20 in (2007) |
| December 12 | 60.1°F (2025) | 1.0°F (2013) | 0.43 in (2015) |
| December 13 | 64.9°F (2025) | 1.9°F (2020) | 0.14 in (2005) |
| December 14 | 64.0°F (2025) | 5.0°F (2020) | 0.32 in (2014) |
| December 15 | 63.0°F (2025) | 1.9°F (2005) | 0.16 in (2016) |
| December 16 | 59.0°F (2025) | 3.0°F (2015) | 0.32 in (2016) |
| December 17 | 60.1°F (2025) | 1.0°F (2022) | 1.00 in (2008) |
| December 18 | 62.1°F (2025) | 3.0°F (2022) | 0.15 in (2008) |
| December 19 | 59.0°F (2024) | 9.0°F (2016) | 0.21 in (2006) |
| December 20 | 63.0°F (2025) | 1.9°F (2012) | 0.24 in (2012) |
| December 21 | 61.0°F (2003) | 3.9°F (2012) | 0.02 in (2023) |
| December 22 | 64.9°F (2024) | 3.9°F (2017) | 0.52 in (2016) |
| December 23 | 66.0°F (2025) | 3.9°F (2011) | 0.58 in (2016) |
| December 24 | 64.9°F (2025) | -0.9°F (2011) | 0.30 in (2021) |
| December 25 | 60.1°F (2025) | 3.9°F (2009) | 0.56 in (2021) |
| December 26 | 55.9°F (2005) | -0.9°F (2015) | 0.27 in (2014) |
| December 27 | 59.0°F (2005) | -2.9°F (2008) | 0.52 in (2008) |
| December 28 | 59.0°F (2017) | -2.0°F (2014) | 0.32 in (2019) |
| December 29 | 60.1°F (2017) | -2.0°F (2014) | 0.25 in (2022) |
| December 30 | 62.1°F (2017) | -8.0°F (2018) | 0.59 in (2004) |
| December 31 | 61.0°F (2017) | -5.1°F (2018) | 0.11 in (2012) |