San Luis weather by month
What a typical year looks like in San Luis, New Mexico: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Torreon Navajo Mission, 17 km from San Luis; records cover 1961–2026.
The year at a glance
- Precipitation a year
- 10.1 in257 mm
- Snow a year
- 18 in46 cm
- Last spring freeze
- May 15
- First fall freeze
- Oct 7
- Heating degree days
- 5,565
- Cooling degree days
- 661
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 1°−17° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
San Luis in January
Highs average 44°7° and lows 17°−8°, with 0.42 in11 mm of precipitation and 4 in10 cm of snow in a typical January.
- Record high
- 68°20° (1971)
- Record low
- −33°−36° (1971)
- Heating degree days
- 1071
- Cooling degree days
- 0
San Luis in February
Highs average 50°10° and lows 21°−6°, with 0.47 in12 mm of precipitation and 3 in8 cm of snow in a typical February.
- Record high
- 72°22° (2017)
- Record low
- −14°−26° (1982)
- Heating degree days
- 825
- Cooling degree days
- 0
San Luis in March
Highs average 60°15° and lows 26°−3°, with 0.63 in16 mm of precipitation and 2.2 in5.6 cm of snow in a typical March.
- Record high
- 87°31° (2026)
- Record low
- −3°−19° (2002)
- Heating degree days
- 680
- Cooling degree days
- 0
San Luis in April
Highs average 68°20° and lows 32°0°, with 0.68 in17 mm of precipitation and 1 in2.5 cm of snow in a typical April.
- Record high
- 86°30° (1989)
- Record low
- 9°−13° (1983)
- Heating degree days
- 449
- Cooling degree days
- 0
San Luis in May
Highs average 77°25° and lows 41°5°, with 0.72 in18 mm of precipitation and 0.1 in0.3 cm of snow in a typical May.
- Record high
- 97°36° (2002)
- Record low
- 19°−7° (1967)
- Heating degree days
- 209
- Cooling degree days
- 17
San Luis in June
Highs average 88°31° and lows 50°10°, with 0.51 in13 mm of precipitation in a typical June.
- Record high
- 101°38° (1994)
- Record low
- 28°−2° (2001)
- Heating degree days
- 25
- Cooling degree days
- 138
San Luis in July
Highs average 90°32° and lows 57°14°, with 1.7 in43 mm of precipitation in a typical July.
- Record high
- 101°38° (1995)
- Record low
- 41°5° (1992)
- Heating degree days
- 1
- Cooling degree days
- 258
San Luis in August
Highs average 87°31° and lows 55°13°, with 1.8 in45 mm of precipitation in a typical August.
- Record high
- 107°42° (1962)
- Record low
- 37°3° (1968)
- Heating degree days
- 4
- Cooling degree days
- 194
San Luis in September
Highs average 81°27° and lows 48°9°, with 1.2 in29 mm of precipitation in a typical September.
- Record high
- 95°35° (2020)
- Record low
- 26°−3° (1971)
- Heating degree days
- 77
- Cooling degree days
- 53
San Luis in OctoberThis month
Highs average 69°21° and lows 35°2°, with 0.91 in23 mm of precipitation and 0.9 in2.3 cm of snow in a typical October.
- Record high
- 93°34° (1965)
- Record low
- 2°−17° (2019)
- Heating degree days
- 397
- Cooling degree days
- 1
San Luis in November
Highs average 55°13° and lows 25°−4°, with 0.54 in14 mm of precipitation and 1.5 in3.8 cm of snow in a typical November.
- Record high
- 75°24° (1980)
- Record low
- −21°−29° (1976)
- Heating degree days
- 756
- Cooling degree days
- 0
San Luis in December
Highs average 44°7° and lows 17°−8°, with 0.6 in15 mm of precipitation and 6 in14 cm of snow in a typical December.
- Record high
- 67°19° (1998)
- Record low
- −18°−28° (1990)
- Heating degree days
- 1071
- Cooling degree days
- 0