August weather in St. Mary, MO
The average temperature in St. Mary in August is °F (°F–°F). Average precipitation: 3.05 inches.
August is a summer month in St. Mary, and is cooler than the annual average of 0°F. Expect about 8 days with precipitation. Daylight averages about 13h 28m.
Avg High
°F
Avg Low
°F
Precipitation
3.05 in
Daylight
13h 28m
August records in St. Mary
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 95.0°F (1906) | 66.0°F (1907) | 2.25 in (1985) |
| August 2 | 100.0°F (1908) | 64.0°F (1907) | 2.55 in (1978) |
| August 3 | 93.9°F (1908) | 62.1°F (1907) | 1.26 in (2023) |
| August 4 | 93.9°F (1908) | 57.9°F (1907) | 1.73 in (2022) |
| August 5 | 93.9°F (1905) | 70.0°F (1907) | 1.74 in (1987) |
| August 6 | 98.1°F (1906) | 71.1°F (1907) | 1.13 in (1976) |
| August 7 | 93.9°F (1909) | 66.9°F (1906) | 1.77 in (1998) |
| August 8 | 96.1°F (1909) | 64.9°F (1908) | 2.40 in (1999) |
| August 9 | 99.0°F (1909) | 61.0°F (1908) | 2.40 in (1970) |
| August 10 | 100.0°F (1907) | 66.9°F (1908) | 2.01 in (1951) |
| August 11 | 100.0°F (1907) | 66.9°F (1909) | 1.48 in (2002) |
| August 12 | 102.9°F (1909) | 70.0°F (1908) | 1.86 in (1958) |
| August 13 | 102.9°F (1909) | 63.0°F (1907) | 1.37 in (1950) |
| August 14 | 102.0°F (1909) | 70.0°F (1905) | 1.30 in (2016) |
| August 15 | 100.0°F (1908) | 68.0°F (1905) | 3.79 in (2016) |
| August 16 | 100.9°F (1909) | 68.0°F (1905) | 1.80 in (1985) |
| August 17 | 98.1°F (1908) | 66.0°F (1907) | 3.50 in (1959) |
| August 18 | 98.1°F (1906) | 63.0°F (1909) | 1.38 in (1950) |
| August 19 | 96.1°F (1907) | 66.0°F (1909) | 2.30 in (1984) |
| August 20 | 97.0°F (1909) | 63.0°F (1908) | 1.70 in (1959) |
| August 21 | 93.9°F (1905) | 57.9°F (1908) | 2.37 in (1994) |
| August 22 | 91.9°F (1906) | 62.1°F (1907) | 1.73 in (1971) |
| August 23 | 96.1°F (1909) | 59.0°F (1909) | 2.12 in (1907) |
| August 24 | 98.1°F (1909) | 61.0°F (1908) | 1.12 in (1985) |
| August 25 | 99.0°F (1909) | 59.0°F (1907) | 1.40 in (1962) |
| August 26 | 102.0°F (1909) | 55.9°F (1908) | 1.92 in (2001) |
| August 27 | 102.0°F (1909) | 60.1°F (1906) | 1.52 in (1987) |
| August 28 | 102.0°F (1909) | 68.0°F (1908) | 1.82 in (1951) |
| August 29 | 100.9°F (1907) | 66.0°F (1909) | 3.20 in (1974) |
| August 30 | 99.0°F (1907) | 55.9°F (1909) | 5.00 in (2003) |
| August 31 | 102.0°F (1907) | 57.9°F (1909) | 0.82 in (1997) |