August weather in Yountville, CA
The average temperature in Yountville in August is 69.6°F (53.2°F–86.1°F). Average precipitation: 0.06 inches.
August is a summer month in Yountville, and is warmer than the annual average of 59°F. Daily temperatures swing about 32.9°F between overnight low and afternoon high. Expect about 0 days with precipitation. Daylight averages about 13h 30m. For travel, August is a comfortable month to visit.
Avg High
86.1°F
Avg Low
53.2°F
Precipitation
0.06 in
Daylight
13h 30m
August records in Yountville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 104.0°F (1973) | 37.0°F (1894) | 0.05 in (2022) |
| August 2 | 105.1°F (1975) | 41.0°F (1894) | 0.00 in (1893) |
| August 3 | 108.0°F (1998) | 39.9°F (1894) | 0.00 in (1893) |
| August 4 | 107.1°F (1998) | 42.1°F (1953) | 0.04 in (1899) |
| August 5 | 106.0°F (1997) | 39.9°F (1954) | 0.02 in (2014) |
| August 6 | 107.1°F (1972) | 42.1°F (1894) | 0.02 in (1961) |
| August 7 | 105.1°F (1972) | 42.1°F (1954) | 0.02 in (1990) |
| August 8 | 106.0°F (1981) | 44.1°F (1954) | 0.00 in (1893) |
| August 9 | 106.0°F (1970) | 41.0°F (1954) | 0.00 in (1893) |
| August 10 | 105.1°F (1970) | 43.0°F (1954) | 0.04 in (1902) |
| August 11 | 100.9°F (1998) | 41.0°F (1955) | 0.62 in (1965) |
| August 12 | 102.0°F (1998) | 43.0°F (1967) | 0.04 in (1965) |
| August 13 | 104.0°F (1967) | 43.0°F (1976) | 0.35 in (1991) |
| August 14 | 104.0°F (1967) | 41.0°F (1972) | 0.05 in (1976) |
| August 15 | 104.0°F (2020) | 39.9°F (1954) | 0.38 in (1976) |
| August 16 | 102.9°F (1966) | 39.9°F (1894) | 0.00 in (1893) |
| August 17 | 102.9°F (1967) | 39.9°F (1952) | 0.05 in (1976) |
| August 18 | 105.1°F (2020) | 39.9°F (1952) | 0.05 in (1975) |
| August 19 | 102.0°F (2020) | 42.1°F (1952) | 0.41 in (1976) |
| August 20 | 102.0°F (2020) | 42.1°F (1955) | 0.98 in (1997) |
| August 21 | 104.0°F (1969) | 42.1°F (1955) | 0.12 in (1968) |
| August 22 | 100.0°F (1969) | 39.0°F (1973) | 0.04 in (1976) |
| August 23 | 104.0°F (1974) | 36.0°F (1979) | 0.00 in (1893) |
| August 24 | 104.0°F (2010) | 39.9°F (1894) | 0.03 in (2024) |
| August 25 | 105.1°F (1988) | 27.0°F (1894) | 0.00 in (1893) |
| August 26 | 102.9°F (1988) | 25.0°F (1894) | 0.30 in (1954) |
| August 27 | 102.0°F (1962) | 26.1°F (1894) | 0.20 in (1954) |
| August 28 | 107.1°F (1977) | 37.9°F (1985) | 0.22 in (1954) |
| August 29 | 106.0°F (1968) | 37.9°F (1985) | 0.00 in (1893) |
| August 30 | 105.1°F (1976) | 37.9°F (1952) | 0.35 in (1984) |
| August 31 | 104.0°F (1955) | 39.9°F (1955) | 0.03 in (1964) |