Winchester weather by month
What a typical year looks like in Winchester, Nevada: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Las Vegas Area, 8 km from Winchester; records cover 1937–2026.
The year at a glance
- Precipitation a year
- 4.2 in106 mm
- Snow a year
- 0.2 in0.5 cm
- Last spring freeze
- Feb 3
- First fall freeze
- Dec 5
- Heating degree days
- 1,834
- Cooling degree days
- 3,722
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 30°−1° (heating, 99%) and 112°44° (cooling, 1%).
Month by month
Winchester in January
Highs average 59°15° and lows 41°5°, with 0.56 in14 mm of precipitation in a typical January.
- Record high
- 77°25° (1975)
- Record low
- 8°−13° (1937)
- Heating degree days
- 480
- Cooling degree days
- 0
Winchester in February
Highs average 63°17° and lows 44°7°, with 0.8 in20 mm of precipitation in a typical February.
- Record high
- 87°31° (1986)
- Record low
- 16°−9° (1989)
- Heating degree days
- 323
- Cooling degree days
- 1
Winchester in March
Highs average 71°22° and lows 51°10°, with 0.42 in11 mm of precipitation in a typical March.
- Record high
- 98°37° (2026)
- Record low
- 19°−7° (1939)
- Heating degree days
- 166
- Cooling degree days
- 36
Winchester in April
Highs average 79°26° and lows 57°14°, with 0.2 in5.1 mm of precipitation in a typical April.
- Record high
- 99°37° (1943)
- Record low
- 31°−1° (1945)
- Heating degree days
- 55
- Cooling degree days
- 136
Winchester in May
Highs average 89°31° and lows 66°19°, with 0.07 in1.8 mm of precipitation in a typical May.
- Record high
- 109°43° (1951)
- Record low
- 38°3° (1942)
- Heating degree days
- 8
- Cooling degree days
- 390
Winchester in June
Highs average 99°37° and lows 76°24°, with 0.04 in1 mm of precipitation in a typical June.
- Record high
- 117°47° (2013)
- Record low
- 48°9° (1939)
- Heating degree days
- 1
- Cooling degree days
- 679
Winchester in July
Highs average 105°40° and lows 82°28°, with 0.38 in9.7 mm of precipitation in a typical July.
- Record high
- 120°49° (2024)
- Record low
- 56°13° (1937)
- Heating degree days
- 0
- Cooling degree days
- 876
Winchester in August
Highs average 103°39° and lows 81°27°, with 0.32 in8.1 mm of precipitation in a typical August.
- Record high
- 116°47° (1938)
- Record low
- 54°12° (1937)
- Heating degree days
- 0
- Cooling degree days
- 828
Winchester in September
Highs average 95°35° and lows 72°22°, with 0.32 in8.1 mm of precipitation in a typical September.
- Record high
- 114°46° (2020)
- Record low
- 43°6° (1948)
- Heating degree days
- 0
- Cooling degree days
- 560
Winchester in OctoberThis month
Highs average 81°27° and lows 60°15°, with 0.32 in8.1 mm of precipitation in a typical October.
- Record high
- 104°40° (2024)
- Record low
- 26°−3° (1971)
- Heating degree days
- 32
- Cooling degree days
- 200
Winchester in November
Highs average 67°19° and lows 47°8°, with 0.3 in7.6 mm of precipitation in a typical November.
- Record high
- 87°31° (1988)
- Record low
- 15°−9° (1938)
- Heating degree days
- 250
- Cooling degree days
- 16
Winchester in December
Highs average 57°14° and lows 40°4°, with 0.45 in11 mm of precipitation and 0.2 in0.5 cm of snow in a typical December.
- Record high
- 78°26° (1940)
- Record low
- 11°−12° (1990)
- Heating degree days
- 519
- Cooling degree days
- 0