August weather in Shasta Lake, CA
The average temperature in Shasta Lake in August is 81.8°F (67.7°F–96.0°F). Average precipitation: 0.16 inches.
August is a summer month in Shasta Lake, and is warmer than the annual average of 63.5°F. Daily temperatures swing about 28.3°F between overnight low and afternoon high. Expect about 1 days with precipitation. Daylight averages about 13h 37m. For travel, August is hot.
Avg High
96.0°F
Avg Low
67.7°F
Precipitation
0.16 in
Daylight
13h 37m
August records in Shasta Lake
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 111.9°F (1977) | 59.0°F (1985) | 0.06 in (1968) |
| August 2 | 109.9°F (2017) | 59.0°F (1944) | 0.44 in (1944) |
| August 3 | 109.0°F (1977) | 54.0°F (1953) | 1.16 in (2003) |
| August 4 | 108.0°F (1961) | 55.9°F (1953) | 0.06 in (1962) |
| August 5 | 109.0°F (1998) | 57.0°F (1950) | 0.08 in (2014) |
| August 6 | 109.9°F (1998) | 55.0°F (1976) | 0.37 in (2014) |
| August 7 | 111.9°F (1978) | 55.9°F (2007) | 0.05 in (1976) |
| August 8 | 115.0°F (1981) | 57.9°F (1943) | 0.48 in (1962) |
| August 9 | 113.0°F (1981) | 48.9°F (1962) | 0.65 in (1962) |
| August 10 | 113.0°F (1978) | 53.1°F (1991) | 0.75 in (2019) |
| August 11 | 109.0°F (2020) | 54.0°F (1962) | 0.03 in (1965) |
| August 12 | 109.9°F (1971) | 55.9°F (1962) | 0.50 in (1965) |
| August 13 | 108.0°F (2012) | 54.0°F (1988) | 0.00 in (1943) |
| August 14 | 109.9°F (2002) | 55.0°F (1988) | 0.70 in (1976) |
| August 15 | 108.0°F (2008) | 52.0°F (1976) | 3.40 in (1976) |
| August 16 | 111.9°F (2021) | 54.0°F (1976) | 0.02 in (1976) |
| August 17 | 109.0°F (1977) | 54.0°F (1972) | 0.60 in (1968) |
| August 18 | 109.0°F (2022) | 55.0°F (1976) | 0.75 in (1976) |
| August 19 | 109.0°F (2013) | 54.0°F (1959) | 0.85 in (1968) |
| August 20 | 106.0°F (1950) | 55.0°F (1959) | 1.10 in (1997) |
| August 21 | 108.0°F (1950) | 52.0°F (1959) | 0.58 in (1968) |
| August 22 | 105.1°F (2025) | 44.1°F (1978) | 1.24 in (2023) |
| August 23 | 107.1°F (2025) | 54.0°F (1968) | 0.46 in (1983) |
| August 24 | 104.0°F (1996) | 53.1°F (1973) | 0.33 in (2024) |
| August 25 | 105.1°F (1996) | 55.0°F (1978) | 0.07 in (1977) |
| August 26 | 107.1°F (2010) | 52.0°F (1954) | 1.52 in (1954) |
| August 27 | 109.0°F (1944) | 53.1°F (1975) | 0.03 in (1954) |
| August 28 | 109.0°F (1944) | 53.1°F (1951) | 2.02 in (1954) |
| August 29 | 107.1°F (2020) | 54.0°F (1951) | 0.53 in (1979) |
| August 30 | 107.1°F (1988) | 54.0°F (1953) | 0.50 in (2015) |
| August 31 | 107.1°F (1987) | 51.1°F (1984) | 0.48 in (1984) |