Oak Glen weather by month
What a typical year looks like in Oak Glen, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Big Bear Lake, 23 km from Oak Glen; records cover 1960–2026.
The year at a glance
- Precipitation a year
- 20 in507 mm
- Snow a year
- 59 in149 cm
- Last spring freeze
- May 28
- First fall freeze
- Sep 28
- Heating degree days
- 6,273
- Cooling degree days
- 96
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 9°−13° (heating, 99%) and 87°31° (cooling, 1%).
Month by month
Oak Glen in January
Highs average 46°8° and lows 24°−5°, with 4.5 in115 mm of precipitation and 13 in34 cm of snow in a typical January.
- Record high
- 71°22° (1981)
- Record low
- −9°−23° (1979)
- Heating degree days
- 935
- Cooling degree days
- 0
Oak Glen in February
Highs average 46°8° and lows 24°−5°, with 4.4 in112 mm of precipitation and 14 in36 cm of snow in a typical February.
- Record high
- 72°22° (1963)
- Record low
- −10°−23° (1962)
- Heating degree days
- 848
- Cooling degree days
- 0
Oak Glen in March
Highs average 51°11° and lows 27°−3°, with 2.4 in60 mm of precipitation and 12 in30 cm of snow in a typical March.
- Record high
- 80°27° (1972)
- Record low
- −8°−22° (1969)
- Heating degree days
- 803
- Cooling degree days
- 0
Oak Glen in April
Highs average 57°14° and lows 31°−1°, with 0.78 in20 mm of precipitation and 3 in8 cm of snow in a typical April.
- Record high
- 82°28° (1981)
- Record low
- 3°−16° (1963)
- Heating degree days
- 626
- Cooling degree days
- 0
Oak Glen in May
Highs average 66°19° and lows 37°3°, with 0.42 in11 mm of precipitation and 0.6 in1.5 cm of snow in a typical May.
- Record high
- 87°31° (2003)
- Record low
- 18°−8° (1964)
- Heating degree days
- 419
- Cooling degree days
- 0
Oak Glen in June
Highs average 75°24° and lows 44°6°, with 0.15 in3.8 mm of precipitation in a typical June.
- Record high
- 98°37° (1994)
- Record low
- 22°−6° (1963)
- Heating degree days
- 179
- Cooling degree days
- 8
Oak Glen in July
Highs average 80°27° and lows 51°10°, with 0.69 in18 mm of precipitation in a typical July.
- Record high
- 94°34° (1972)
- Record low
- 28°−2° (1963)
- Heating degree days
- 50
- Cooling degree days
- 53
Oak Glen in August
Highs average 79°26° and lows 50°10°, with 0.82 in21 mm of precipitation in a typical August.
- Record high
- 92°33° (1974)
- Record low
- 29°−2° (1965)
- Heating degree days
- 60
- Cooling degree days
- 32
Oak Glen in September
Highs average 73°23° and lows 44°7°, with 0.4 in10 mm of precipitation in a typical September.
- Record high
- 87°31° (1978)
- Record low
- 19°−7° (1964)
- Heating degree days
- 198
- Cooling degree days
- 3
Oak Glen in OctoberThis month
Highs average 63°17° and lows 35°2°, with 0.79 in20 mm of precipitation and 1.2 in3 cm of snow in a typical October.
- Record high
- 85°29° (1980)
- Record low
- 10°−12° (1961)
- Heating degree days
- 490
- Cooling degree days
- 0
Oak Glen in November
Highs average 54°12° and lows 28°−2°, with 1.4 in34 mm of precipitation and 3 in9 cm of snow in a typical November.
- Record high
- 74°23° (1977)
- Record low
- −15°−26° (1964)
- Heating degree days
- 730
- Cooling degree days
- 0
Oak Glen in December
Highs average 46°8° and lows 24°−5°, with 3.3 in84 mm of precipitation and 11 in28 cm of snow in a typical December.
- Record high
- 72°22° (2025)
- Record low
- −14°−26° (1960)
- Heating degree days
- 935
- Cooling degree days
- 0