August weather in St. Thomas, MO
The average temperature in St. Thomas in August is 76.9°F (66.6°F–87.2°F). Average precipitation: 4.13 inches.
August is a summer month in St. Thomas, and is warmer than the annual average of 55.4°F. Daily temperatures swing about 20.6°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 13h 30m. For travel, August is a comfortable month to visit.
Avg High
87.2°F
Avg Low
66.6°F
Precipitation
4.13 in
Daylight
13h 30m
August records in St. Thomas
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 109.9°F (1980) | 52.0°F (1925) | 4.32 in (2016) |
| August 2 | 107.1°F (1901) | 51.1°F (1962) | 1.46 in (1903) |
| August 3 | 107.1°F (1918) | 48.9°F (1950) | 2.80 in (2023) |
| August 4 | 108.0°F (1918) | 48.0°F (1912) | 1.27 in (1990) |
| August 5 | 107.1°F (1918) | 48.9°F (1912) | 1.60 in (2004) |
| August 6 | 108.0°F (1913) | 48.0°F (1957) | 2.75 in (2005) |
| August 7 | 109.9°F (1934) | 48.0°F (1957) | 1.85 in (1928) |
| August 8 | 109.9°F (1934) | 51.1°F (1989) | 3.30 in (1999) |
| August 9 | 111.0°F (1934) | 50.0°F (1964) | 3.00 in (1940) |
| August 10 | 111.0°F (1934) | 51.1°F (1972) | 2.00 in (1893) |
| August 11 | 106.0°F (1918) | 48.9°F (1960) | 2.20 in (1929) |
| August 12 | 108.0°F (1913) | 46.0°F (1964) | 5.55 in (1993) |
| August 13 | 106.0°F (1913) | 43.0°F (1964) | 1.98 in (1899) |
| August 14 | 105.1°F (1913) | 48.9°F (2004) | 2.83 in (1946) |
| August 15 | 106.0°F (1936) | 50.0°F (1962) | 4.77 in (1946) |
| August 16 | 105.1°F (2007) | 50.0°F (1992) | 2.16 in (1957) |
| August 17 | 102.9°F (1913) | 50.0°F (1992) | 1.93 in (2017) |
| August 18 | 105.1°F (1962) | 53.1°F (1943) | 2.20 in (1940) |
| August 19 | 105.1°F (1936) | 48.9°F (1953) | 2.42 in (2015) |
| August 20 | 102.0°F (1900) | 46.9°F (1950) | 1.53 in (1949) |
| August 21 | 102.0°F (1983) | 41.0°F (1950) | 2.95 in (2010) |
| August 22 | 102.9°F (1936) | 48.0°F (1961) | 1.50 in (1905) |
| August 23 | 104.0°F (1936) | 50.0°F (1904) | 2.14 in (1914) |
| August 24 | 104.0°F (1936) | 48.9°F (1920) | 3.05 in (1911) |
| August 25 | 102.9°F (1943) | 46.0°F (1958) | 2.15 in (1941) |
| August 26 | 104.0°F (1936) | 46.9°F (1910) | 3.43 in (2006) |
| August 27 | 105.1°F (1983) | 45.0°F (1910) | 1.30 in (1902) |
| August 28 | 104.0°F (1913) | 42.1°F (1967) | 3.20 in (1974) |
| August 29 | 106.0°F (1984) | 42.1°F (1986) | 2.10 in (2018) |
| August 30 | 104.0°F (1947) | 45.0°F (1893) | 2.00 in (1977) |
| August 31 | 105.1°F (1913) | 25.0°F (1893) | 1.95 in (2019) |