August weather in Big Bear Lake, CA
The average temperature in Big Bear Lake in August is 64.1°F (49.5°F–78.7°F). Average precipitation: 0.82 inches.
August is a summer month in Big Bear Lake, and is warmer than the annual average of 48°F. Daily temperatures swing about 29.2°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 13h 17m. For travel, August is a comfortable month to visit.
Avg High
78.7°F
Avg Low
49.5°F
Precipitation
0.82 in
Daylight
13h 17m
August records in Big Bear Lake
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 89.1°F (1977) | 28.9°F (2007) | 0.73 in (1992) |
| August 2 | 91.0°F (1979) | 35.1°F (2007) | 0.58 in (2024) |
| August 3 | 87.1°F (2021) | 35.1°F (1976) | 0.38 in (2014) |
| August 4 | 88.0°F (1998) | 35.1°F (1981) | 0.59 in (1974) |
| August 5 | 89.1°F (1998) | 36.0°F (1976) | 1.20 in (1987) |
| August 6 | 89.1°F (1998) | 37.0°F (1985) | 0.20 in (2005) |
| August 7 | 91.0°F (1981) | 37.0°F (1991) | 0.69 in (1963) |
| August 8 | 91.9°F (1981) | 37.9°F (1999) | 0.21 in (1989) |
| August 9 | 90.0°F (2004) | 36.0°F (2001) | 0.40 in (1983) |
| August 10 | 90.0°F (1970) | 37.9°F (1963) | 0.48 in (1984) |
| August 11 | 89.1°F (1970) | 37.0°F (2011) | 0.48 in (1998) |
| August 12 | 88.0°F (1960) | 37.9°F (1988) | 0.31 in (1972) |
| August 13 | 90.0°F (2002) | 35.1°F (1993) | 1.88 in (1994) |
| August 14 | 90.0°F (2002) | 36.0°F (1993) | 1.03 in (2004) |
| August 15 | 90.0°F (2002) | 34.0°F (1993) | 1.43 in (2020) |
| August 16 | 89.1°F (2002) | 34.0°F (1976) | 1.13 in (2018) |
| August 17 | 89.1°F (2002) | 37.0°F (1964) | 1.73 in (1977) |
| August 18 | 88.0°F (2002) | 37.0°F (1979) | 0.73 in (2012) |
| August 19 | 86.0°F (2009) | 37.0°F (1972) | 1.20 in (1984) |
| August 20 | 86.0°F (2009) | 37.0°F (1963) | 2.62 in (2023) |
| August 21 | 89.1°F (1986) | 36.0°F (1985) | 1.00 in (2023) |
| August 22 | 86.0°F (2007) | 30.9°F (1968) | 0.51 in (1982) |
| August 23 | 87.1°F (1985) | 30.9°F (1983) | 0.46 in (1967) |
| August 24 | 90.0°F (1985) | 33.1°F (1983) | 0.40 in (1999) |
| August 25 | 91.9°F (1985) | 28.9°F (1965) | 0.82 in (2003) |
| August 26 | 90.0°F (1985) | 36.0°F (1983) | 0.54 in (1970) |
| August 27 | 90.0°F (1985) | 36.0°F (1990) | 0.84 in (1986) |
| August 28 | 90.0°F (1985) | 35.1°F (1961) | 1.10 in (2000) |
| August 29 | 91.9°F (1974) | 30.9°F (1964) | 0.48 in (2012) |
| August 30 | 86.0°F (1996) | 33.1°F (1962) | 0.28 in (2013) |
| August 31 | 88.0°F (1976) | 34.0°F (1961) | 1.59 in (2000) |