Mount Charleston weather by month
What a typical year looks like in Mount Charleston, Nevada: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Mt. Charleston Fire Station, 3 km from Mount Charleston; records cover 1949–2026.
The year at a glance
- Precipitation a year
- 26.4 in671 mm
- Snow a year
- 100 in254 cm
- Last spring freeze
- Jun 7
- First fall freeze
- Sep 26
- Heating degree days
- 6,705
- Cooling degree days
- 157
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 4°−16° (heating, 99%) and 87°31° (cooling, 1%).
Month by month
Mount Charleston in January
Highs average 44°7° and lows 22°−6°, with 3.7 in94 mm of precipitation and 21 in52 cm of snow in a typical January.
- Record high
- 70°21° (1990)
- Record low
- −12°−24° (1949)
- Heating degree days
- 997
- Cooling degree days
- 0
Mount Charleston in February
Highs average 44°7° and lows 22°−6°, with 5.1 in130 mm of precipitation and 29 in74 cm of snow in a typical February.
- Record high
- 69°21° (1989)
- Record low
- −15°−26° (1949)
- Heating degree days
- 892
- Cooling degree days
- 0
Mount Charleston in March
Highs average 49°10° and lows 26°−4°, with 2.9 in74 mm of precipitation and 17 in44 cm of snow in a typical March.
- Record high
- 78°26° (2026)
- Record low
- −4°−20° (1995)
- Heating degree days
- 856
- Cooling degree days
- 0
Mount Charleston in April
Highs average 55°13° and lows 30°−1°, with 1 in26 mm of precipitation and 6 in16 cm of snow in a typical April.
- Record high
- 79°26° (1989)
- Record low
- 7°−14° (1982)
- Heating degree days
- 682
- Cooling degree days
- 0
Mount Charleston in May
Highs average 63°17° and lows 37°3°, with 0.82 in21 mm of precipitation and 1.6 in4.1 cm of snow in a typical May.
- Record high
- 86°30° (1988)
- Record low
- 16°−9° (1995)
- Heating degree days
- 460
- Cooling degree days
- 1
Mount Charleston in June
Highs average 74°23° and lows 46°8°, with 0.31 in7.9 mm of precipitation and 0.3 in0.8 cm of snow in a typical June.
- Record high
- 93°34° (1986)
- Record low
- 17°−8° (1995)
- Heating degree days
- 182
- Cooling degree days
- 22
Mount Charleston in July
Highs average 79°26° and lows 52°11°, with 2.2 in56 mm of precipitation in a typical July.
- Record high
- 98°37° (1988)
- Record low
- 31°−1° (1987)
- Heating degree days
- 52
- Cooling degree days
- 70
Mount Charleston in August
Highs average 78°26° and lows 52°11°, with 2.3 in59 mm of precipitation in a typical August.
- Record high
- 93°34° (1986)
- Record low
- 30°−1° (1995)
- Heating degree days
- 54
- Cooling degree days
- 56
Mount Charleston in September
Highs average 72°22° and lows 44°7°, with 1.7 in43 mm of precipitation in a typical September.
- Record high
- 90°32° (1986)
- Record low
- 17°−8° (1995)
- Heating degree days
- 219
- Cooling degree days
- 8
Mount Charleston in OctoberThis month
Highs average 62°16° and lows 35°2°, with 1.8 in45 mm of precipitation and 1 in2.5 cm of snow in a typical October.
- Record high
- 83°28° (1989)
- Record low
- 7°−14° (1994)
- Heating degree days
- 522
- Cooling degree days
- 0
Mount Charleston in November
Highs average 51°11° and lows 27°−3°, with 1.3 in34 mm of precipitation and 8 in20 cm of snow in a typical November.
- Record high
- 79°26° (1989)
- Record low
- −5°−21° (1994)
- Heating degree days
- 782
- Cooling degree days
- 0
Mount Charleston in December
Highs average 44°7° and lows 21°−6°, with 3.2 in80 mm of precipitation and 16 in41 cm of snow in a typical December.
- Record high
- 69°21° (1989)
- Record low
- −18°−28° (1990)
- Heating degree days
- 1007
- Cooling degree days
- 0