August weather in Charleston, MO
The average temperature in Charleston in August is 77.6°F (67.5°F–87.8°F). Average precipitation: 3.18 inches.
August is a summer month in Charleston, and is warmer than the annual average of 58.1°F. Daily temperatures swing about 20.3°F between overnight low and afternoon high. Daylight averages about 13h 25m. For travel, August is a comfortable month to visit.
Avg High
87.8°F
Avg Low
67.5°F
Precipitation
3.18 in
Daylight
13h 25m
August records in Charleston
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 100.0°F (1942) | 57.9°F (1925) | 2.60 in (1915) |
| August 2 | 99.0°F (1987) | 60.1°F (1920) | 1.67 in (1932) |
| August 3 | 102.9°F (1964) | 57.9°F (1920) | 2.90 in (1975) |
| August 4 | 102.9°F (1964) | 54.0°F (1912) | 3.03 in (1970) |
| August 5 | 102.9°F (1947) | 57.0°F (1912) | 2.16 in (1985) |
| August 6 | 102.0°F (1947) | 55.9°F (1994) | 9.00 in (2010) |
| August 7 | 102.0°F (1930) | 55.0°F (1990) | 1.93 in (1908) |
| August 8 | 105.1°F (1930) | 52.0°F (1989) | 2.13 in (1998) |
| August 9 | 106.0°F (1930) | 54.0°F (1989) | 2.46 in (2001) |
| August 10 | 99.0°F (1918) | 54.0°F (1989) | 2.74 in (1978) |
| August 11 | 100.9°F (1918) | 54.0°F (1989) | 5.66 in (1952) |
| August 12 | 100.0°F (1999) | 51.1°F (2004) | 3.68 in (1935) |
| August 13 | 100.0°F (2010) | 51.1°F (2004) | 2.34 in (2002) |
| August 14 | 100.9°F (1954) | 51.1°F (2004) | 1.57 in (1997) |
| August 15 | 102.9°F (1954) | 52.0°F (1992) | 3.06 in (1917) |
| August 16 | 100.9°F (2007) | 52.0°F (2004) | 2.58 in (1944) |
| August 17 | 102.9°F (2007) | 55.9°F (2004) | 4.41 in (1926) |
| August 18 | 102.9°F (1956) | 55.9°F (2012) | 1.27 in (1941) |
| August 19 | 100.0°F (1925) | 55.9°F (2012) | 1.50 in (1954) |
| August 20 | 99.0°F (1983) | 55.9°F (2012) | 3.98 in (1988) |
| August 21 | 100.9°F (1983) | 55.0°F (1950) | 1.20 in (1971) |
| August 22 | 102.0°F (1983) | 55.9°F (1956) | 1.34 in (1964) |
| August 23 | 98.1°F (2007) | 54.0°F (2009) | 2.68 in (1942) |
| August 24 | 100.0°F (1943) | 54.0°F (2009) | 2.79 in (1982) |
| August 25 | 100.9°F (1943) | 55.9°F (1942) | 0.85 in (1962) |
| August 26 | 100.0°F (1983) | 51.8°F (2025) | 1.60 in (1932) |
| August 27 | 100.9°F (1936) | 50.9°F (2025) | 1.90 in (1951) |
| August 28 | 100.0°F (1936) | 53.1°F (1986) | 3.02 in (1978) |
| August 29 | 100.0°F (1954) | 50.0°F (1986) | 1.50 in (2003) |
| August 30 | 99.0°F (1951) | 51.1°F (1988) | 2.63 in (1978) |
| August 31 | 100.0°F (1951) | 50.0°F (1915) | 2.73 in (1965) |