La Mesilla weather by month
What a typical year looks like in La Mesilla, New Mexico: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Los Alamos, 25 km from La Mesilla; records cover 1918–2026.
The year at a glance
- Precipitation a year
- 17.5 in444 mm
- Snow a year
- 42 in107 cm
- Last spring freeze
- May 6
- First fall freeze
- Oct 8
- Heating degree days
- 5,928
- Cooling degree days
- 397
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 5°−15° (heating, 99%) and 90°32° (cooling, 1%).
Month by month
La Mesilla in January
Highs average 40°5° and lows 21°−6°, with 0.9 in23 mm of precipitation and 10 in25 cm of snow in a typical January.
- Record high
- 65°18° (1953)
- Record low
- −18°−28° (1963)
- Heating degree days
- 1073
- Cooling degree days
- 0
La Mesilla in February
Highs average 45°7° and lows 24°−5°, with 0.72 in18 mm of precipitation and 9 in22 cm of snow in a typical February.
- Record high
- 69°21° (1986)
- Record low
- −17°−27° (1951)
- Heating degree days
- 867
- Cooling degree days
- 0
La Mesilla in March
Highs average 53°12° and lows 30°−1°, with 1 in26 mm of precipitation and 6 in15 cm of snow in a typical March.
- Record high
- 83°28° (2026)
- Record low
- −3°−19° (1948)
- Heating degree days
- 728
- Cooling degree days
- 0
La Mesilla in April
Highs average 61°16° and lows 35°2°, with 0.93 in24 mm of precipitation and 3 in8 cm of snow in a typical April.
- Record high
- 80°27° (1950)
- Record low
- 5°−15° (1928)
- Heating degree days
- 504
- Cooling degree days
- 0
La Mesilla in May
Highs average 70°21° and lows 44°7°, with 1.2 in30 mm of precipitation and 0.1 in0.3 cm of snow in a typical May.
- Record high
- 93°34° (1934)
- Record low
- 22°−6° (2013)
- Heating degree days
- 256
- Cooling degree days
- 15
La Mesilla in June
Highs average 81°27° and lows 54°12°, with 1.2 in30 mm of precipitation in a typical June.
- Record high
- 96°36° (2016)
- Record low
- 28°−2° (1919)
- Heating degree days
- 44
- Cooling degree days
- 110
La Mesilla in July
Highs average 83°28° and lows 57°14°, with 2.9 in75 mm of precipitation in a typical July.
- Record high
- 98°37° (2020)
- Record low
- 37°3° (1923)
- Heating degree days
- 9
- Cooling degree days
- 152
La Mesilla in August
Highs average 80°26° and lows 55°13°, with 3.2 in81 mm of precipitation in a typical August.
- Record high
- 94°34° (2026)
- Record low
- 38°3° (1918)
- Heating degree days
- 22
- Cooling degree days
- 93
La Mesilla in September
Highs average 74°23° and lows 49°10°, with 2 in51 mm of precipitation in a typical September.
- Record high
- 94°34° (1934)
- Record low
- 23°−5° (1936)
- Heating degree days
- 130
- Cooling degree days
- 27
La Mesilla in OctoberThis month
Highs average 63°17° and lows 38°4°, with 1.6 in40 mm of precipitation and 1.7 in4.3 cm of snow in a typical October.
- Record high
- 84°29° (1980)
- Record low
- 6°−14° (1993)
- Heating degree days
- 448
- Cooling degree days
- 0
La Mesilla in November
Highs average 50°10° and lows 28°−2°, with 0.95 in24 mm of precipitation and 4 in11 cm of snow in a typical November.
- Record high
- 72°22° (1950)
- Record low
- −14°−26° (1976)
- Heating degree days
- 776
- Cooling degree days
- 0
La Mesilla in December
Highs average 40°5° and lows 21°−6°, with 0.87 in22 mm of precipitation and 8 in20 cm of snow in a typical December.
- Record high
- 64°18° (1980)
- Record low
- −13°−25° (1978)
- Heating degree days
- 1071
- Cooling degree days
- 0