Vernon weather by month
What a typical year looks like in Vernon, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Los Angeles Airport Area, 18 km from Vernon; records cover 1944–2026.
The year at a glance
- Precipitation a year
- 12.2 in311 mm
- Snow a year
- Rare
- Last spring freeze
- Rare
- First fall freeze
- Rare
- Heating degree days
- 1,213
- Cooling degree days
- 718
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 42°6° (heating, 99%) and 91°33° (cooling, 1%).
Month by month
Vernon in January
Highs average 66°19° and lows 49°10°, with 2.9 in73 mm of precipitation in a typical January.
- Record high
- 91°33° (2003)
- Record low
- 27°−3° (1949)
- Heating degree days
- 227
- Cooling degree days
- 6
Vernon in February
Highs average 66°19° and lows 50°10°, with 3 in76 mm of precipitation in a typical February.
- Record high
- 92°33° (1963)
- Record low
- 34°1° (1948)
- Heating degree days
- 207
- Cooling degree days
- 7
Vernon in March
Highs average 66°19° and lows 52°11°, with 1.7 in44 mm of precipitation in a typical March.
- Record high
- 95°35° (1988)
- Record low
- 35°2° (1945)
- Heating degree days
- 190
- Cooling degree days
- 8
Vernon in April
Highs average 68°20° and lows 54°12°, with 0.6 in15 mm of precipitation in a typical April.
- Record high
- 102°39° (1989)
- Record low
- 42°6° (1945)
- Heating degree days
- 132
- Cooling degree days
- 17
Vernon in May
Highs average 70°21° and lows 58°14°, with 0.28 in7.1 mm of precipitation in a typical May.
- Record high
- 97°36° (1956)
- Record low
- 45°7° (1964)
- Heating degree days
- 70
- Cooling degree days
- 24
Vernon in June
Highs average 72°22° and lows 61°16°, with 0.08 in2 mm of precipitation in a typical June.
- Record high
- 104°40° (1981)
- Record low
- 48°9° (1950)
- Heating degree days
- 13
- Cooling degree days
- 56
Vernon in July
Highs average 75°24° and lows 64°18°, with 0.04 in1 mm of precipitation in a typical July.
- Record high
- 97°36° (1959)
- Record low
- 52°11° (1947)
- Heating degree days
- 2
- Cooling degree days
- 142
Vernon in August
Highs average 77°25° and lows 65°18°, with 0 in0 mm of precipitation in a typical August.
- Record high
- 98°37° (1955)
- Record low
- 51°11° (1948)
- Heating degree days
- 1
- Cooling degree days
- 179
Vernon in September
Highs average 77°25° and lows 64°18°, with 0.11 in2.8 mm of precipitation in a typical September.
- Record high
- 110°43° (1963)
- Record low
- 47°8° (1948)
- Heating degree days
- 2
- Cooling degree days
- 155
Vernon in OctoberThis month
Highs average 74°24° and lows 60°15°, with 0.49 in12 mm of precipitation in a typical October.
- Record high
- 106°41° (1961)
- Record low
- 43°6° (1946)
- Heating degree days
- 26
- Cooling degree days
- 91
Vernon in November
Highs average 71°22° and lows 54°12°, with 0.82 in21 mm of precipitation in a typical November.
- Record high
- 101°38° (1966)
- Record low
- 38°3° (1947)
- Heating degree days
- 111
- Cooling degree days
- 30
Vernon in December
Highs average 66°19° and lows 49°10°, with 2.2 in57 mm of precipitation in a typical December.
- Record high
- 94°34° (1958)
- Record low
- 32°0° (1968)
- Heating degree days
- 232
- Cooling degree days
- 3