New Mexico’s elevations make a single statewide temperature misleading. Freezing nights are normal nearly everywhere; what changes with altitude is how warm the afternoon gets and how cold the night falls.
How cold does it get in New Mexico in the winter time?
NOAA’s 1991–2020 climate normals give a clear picture by elevation. The southern lowlands average highs in the upper 50s in December, Albuquerque and Santa Fe sit in the 40s, and the high mountain towns stay in the 30s by day and drop to single digits at night.
| Station and elevation | December high / low | January high / low |
| Carlsbad airport, 3,232 ft | December high / low57°F / 30°F | January high / low58°F / 30°F |
| Las Cruces (NMSU), 3,886 ft | December high / low58°F / 30°F | January high / low59°F / 30°F |
| White Sands, 4,006 ft | December high / low57°F / 22°F | January high / low57°F / 22°F |
| Albuquerque Sunport, 5,310 ft | December high / low47°F / 27°F | January high / low48°F / 26°F |
| Santa Fe airport, 6,344 ft | December high / low44°F / 20°F | January high / low44°F / 20°F |
| Taos, 6,965 ft | December high / low42°F / 14°F | January high / low42°F / 12°F |
| Angel Fire, 8,500 ft | December high / low38°F / 11°F | January high / low38°F / 9°F |
| Red River, 8,667 ft | December high / low35°F / 8°F | January high / low35°F / 7°F |
When does winter start in New Mexico?
On the calendar, winter begins at the December solstice: 1:50 p.m. MST on December 21, 2026, according to the U.S. Naval Observatory. Meteorologists use a simpler rule and count December through February as winter.
Winter weather arrives on its own schedule at each elevation. NOAA’s median date of the first 32°F night is September 7 at Red River, October 3 in Taos, October 15 at the Santa Fe airport, October 22 at White Sands, November 3 at the Albuquerque Sunport and November 13 in Las Cruces. Half of years freeze earlier than those dates, so pack for cold nights on any autumn trip into the mountains.
How warm is it in New Mexico in December?
The southern lowlands are the mild option, with average December highs in the upper 50s, but even there the average low is at or below freezing. Neither the table nor the park averages below support packing only for warm weather. Use the National Weather Service forecast for each stop, including its elevation and the hours you will be outside. A sunset walk, a dawn birding stop and a mountain outing need separate checks.
Pack for both ends of the day: warm hands for freezing nights, traction for icy trails, and sun protection, since UV gets stronger as elevation rises (EPA).
What part of New Mexico has the warmest winters?
The southern lowlands around Las Cruces and the Carlsbad area generally have New Mexico’s warmest winters. The northern high country around Santa Fe and Taos is colder because it sits higher, not simply because it is farther north. Elevation is the main reason one part of the state can have a mild afternoon while another remains in alpine winter.