August weather in Clearlake, CA
The average temperature in Clearlake in August is 72.4°F (54.3°F–90.5°F). Average precipitation: 0.09 inches.
August is a summer month in Clearlake, and is warmer than the annual average of 56.9°F. Daily temperatures swing about 36.2°F between overnight low and afternoon high. Expect about 0 days with precipitation. Daylight averages about 13h 32m. For travel, August is hot.
Avg High
90.5°F
Avg Low
54.3°F
Precipitation
0.09 in
Daylight
13h 32m
August records in Clearlake
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 108.0°F (1977) | 42.1°F (1985) | 0.62 in (2003) |
| August 2 | 106.0°F (1979) | 42.1°F (1957) | 0.00 in (1955) |
| August 3 | 107.1°F (1969) | 44.1°F (1956) | 0.00 in (1955) |
| August 4 | 105.1°F (1961) | 45.0°F (1956) | 0.00 in (1955) |
| August 5 | 104.0°F (1961) | 45.0°F (1955) | 0.14 in (1974) |
| August 6 | 107.1°F (1978) | 46.9°F (1968) | 0.00 in (1955) |
| August 7 | 111.0°F (1978) | 43.0°F (1975) | 0.00 in (1955) |
| August 8 | 109.9°F (1978) | 46.0°F (1967) | 0.00 in (1955) |
| August 9 | 111.9°F (1978) | 46.0°F (1964) | 0.07 in (1961) |
| August 10 | 109.0°F (1978) | 46.9°F (1955) | 0.00 in (1955) |
| August 11 | 109.9°F (1971) | 42.1°F (1967) | 0.02 in (1965) |
| August 12 | 109.0°F (1971) | 41.0°F (1967) | 0.75 in (1965) |
| August 13 | 105.1°F (2002) | 46.0°F (1967) | 0.00 in (1955) |
| August 14 | 106.0°F (2002) | 44.1°F (1957) | 0.03 in (1976) |
| August 15 | 106.0°F (1967) | 44.1°F (1955) | 0.04 in (1976) |
| August 16 | 108.0°F (1967) | 42.1°F (1955) | 0.04 in (1976) |
| August 17 | 106.0°F (2023) | 42.1°F (1955) | 0.00 in (1955) |
| August 18 | 105.1°F (1966) | 43.0°F (1963) | 1.20 in (1965) |
| August 19 | 107.1°F (1967) | 41.0°F (1970) | 0.17 in (1976) |
| August 20 | 105.1°F (1967) | 43.0°F (1959) | 0.76 in (1997) |
| August 21 | 104.0°F (1967) | 44.1°F (1979) | 0.40 in (1968) |
| August 22 | 102.9°F (1964) | 39.9°F (1968) | 0.52 in (2003) |
| August 23 | 105.1°F (1982) | 39.9°F (1966) | 0.05 in (2020) |
| August 24 | 105.1°F (1967) | 43.0°F (1963) | 0.00 in (1955) |
| August 25 | 102.9°F (1964) | 42.1°F (1970) | 0.00 in (1955) |
| August 26 | 104.0°F (1972) | 42.1°F (1955) | 0.03 in (1973) |
| August 27 | 105.1°F (1972) | 41.0°F (1955) | 0.00 in (1955) |
| August 28 | 106.0°F (1972) | 42.1°F (1971) | 0.00 in (1955) |
| August 29 | 104.0°F (1988) | 41.0°F (1955) | 0.03 in (1984) |
| August 30 | 104.0°F (1987) | 39.9°F (1955) | 0.20 in (1984) |
| August 31 | 104.0°F (1968) | 39.9°F (1955) | 0.39 in (1966) |