August weather in Suisun City, CA
The average temperature in Suisun City in August is 73.6°F (58.0°F–89.2°F). Average precipitation: 0.03 inches.
August is a summer month in Suisun City, and is warmer than the annual average of 61.7°F. Daily temperatures swing about 31.2°F between overnight low and afternoon high. Expect about 0 days with precipitation. Daylight averages about 13h 29m. For travel, August is hot.
Avg High
89.2°F
Avg Low
58.0°F
Precipitation
0.03 in
Daylight
13h 29m
August records in Suisun City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 107.1°F (1993) | 45.0°F (1988) | 0.00 in (1951) |
| August 2 | 107.1°F (1980) | 48.0°F (1962) | 0.00 in (1951) |
| August 3 | 104.0°F (1998) | 48.9°F (1962) | 0.00 in (1951) |
| August 4 | 109.9°F (1998) | 48.0°F (2008) | 0.02 in (2014) |
| August 5 | 111.0°F (1998) | 43.0°F (1962) | 0.03 in (2014) |
| August 6 | 109.9°F (1983) | 44.1°F (1962) | 0.00 in (1951) |
| August 7 | 107.1°F (1981) | 48.0°F (1975) | 0.01 in (1964) |
| August 8 | 108.0°F (1981) | 46.0°F (1956) | 0.06 in (1958) |
| August 9 | 109.9°F (1984) | 48.0°F (1986) | 0.00 in (1951) |
| August 10 | 109.9°F (2002) | 46.9°F (1961) | 0.00 in (1951) |
| August 11 | 106.0°F (1996) | 48.0°F (1954) | 0.43 in (1965) |
| August 12 | 105.1°F (1996) | 19.9°F (1952) | 0.00 in (1951) |
| August 13 | 106.0°F (1996) | 44.1°F (1988) | 0.01 in (1991) |
| August 14 | 107.1°F (1996) | 48.0°F (1986) | 0.01 in (1991) |
| August 15 | 107.1°F (2020) | 35.1°F (1986) | 0.15 in (1976) |
| August 16 | 105.1°F (2015) | 39.9°F (1984) | 0.01 in (1958) |
| August 17 | 106.0°F (2022) | 50.0°F (1985) | 0.00 in (1951) |
| August 18 | 105.1°F (1984) | 44.1°F (1985) | 0.14 in (1975) |
| August 19 | 102.0°F (1960) | 39.9°F (1985) | 0.28 in (1976) |
| August 20 | 104.0°F (1986) | 43.0°F (1985) | 0.41 in (1997) |
| August 21 | 102.0°F (2025) | 44.1°F (1979) | 0.02 in (1968) |
| August 22 | 104.0°F (1982) | 46.9°F (1985) | 1.01 in (1968) |
| August 23 | 104.0°F (1982) | 45.0°F (1986) | 0.00 in (1951) |
| August 24 | 100.0°F (1985) | 48.9°F (1986) | 0.00 in (1951) |
| August 25 | 106.0°F (2010) | 48.0°F (1986) | 0.00 in (1951) |
| August 26 | 105.1°F (1999) | 46.9°F (1985) | 0.00 in (1951) |
| August 27 | 106.0°F (2017) | 45.0°F (1979) | 0.00 in (1951) |
| August 28 | 107.1°F (2017) | 46.9°F (1985) | 0.00 in (1951) |
| August 29 | 107.1°F (1981) | 41.0°F (2011) | 0.04 in (1953) |
| August 30 | 106.0°F (2007) | 48.0°F (1955) | 0.04 in (1966) |
| August 31 | 102.9°F (1955) | 48.9°F (1957) | 0.17 in (1984) |