August weather in Mercer, MO
The average temperature in Mercer in August is 73.6°F (63.0°F–84.2°F). Average precipitation: 4.25 inches.
August is a summer month in Mercer, and is warmer than the annual average of 51.1°F. Daily temperatures swing about 21.2°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 13h 37m. For travel, August is a comfortable month to visit.
Avg High
84.2°F
Avg Low
63.0°F
Precipitation
4.25 in
Daylight
13h 37m
August records in Mercer
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 105.1°F (1970) | 50.0°F (1895) | 1.34 in (1956) |
| August 2 | 105.1°F (1897) | 48.9°F (1986) | 4.95 in (2023) |
| August 3 | 105.1°F (1983) | 48.0°F (1974) | 2.85 in (1972) |
| August 4 | 104.0°F (1954) | 48.9°F (1978) | 2.09 in (2014) |
| August 5 | 102.9°F (1896) | 50.0°F (1952) | 2.53 in (2023) |
| August 6 | 100.0°F (1984) | 46.0°F (1957) | 2.58 in (1959) |
| August 7 | 100.9°F (1984) | 41.0°F (1989) | 1.71 in (2002) |
| August 8 | 105.1°F (1988) | 45.0°F (1989) | 1.73 in (1987) |
| August 9 | 104.0°F (1894) | 48.0°F (1989) | 2.94 in (2015) |
| August 10 | 102.0°F (1896) | 50.0°F (1989) | 1.66 in (2009) |
| August 11 | 104.0°F (1894) | 46.0°F (1986) | 0.73 in (1980) |
| August 12 | 99.0°F (1905) | 46.0°F (1964) | 1.83 in (2016) |
| August 13 | 99.0°F (1894) | 39.9°F (1964) | 2.65 in (1975) |
| August 14 | 98.1°F (1894) | 51.1°F (1955) | 2.01 in (1896) |
| August 15 | 104.0°F (1988) | 48.0°F (1963) | 1.74 in (1902) |
| August 16 | 106.0°F (1983) | 46.9°F (1992) | 2.90 in (2009) |
| August 17 | 108.0°F (1983) | 46.0°F (1897) | 1.24 in (1997) |
| August 18 | 105.1°F (1983) | 45.0°F (2012) | 1.80 in (1970) |
| August 19 | 102.9°F (1983) | 48.0°F (1953) | 1.28 in (2015) |
| August 20 | 102.0°F (1900) | 44.1°F (1956) | 1.10 in (1969) |
| August 21 | 102.0°F (1983) | 41.0°F (1956) | 1.54 in (1957) |
| August 22 | 99.0°F (1898) | 46.9°F (1953) | 2.56 in (1983) |
| August 23 | 102.0°F (1898) | 45.0°F (1966) | 3.80 in (1996) |
| August 24 | 97.0°F (1983) | 45.0°F (1966) | 2.80 in (1962) |
| August 25 | 100.9°F (1983) | 42.1°F (1958) | 1.22 in (2004) |
| August 26 | 102.9°F (1983) | 45.0°F (2025) | 2.47 in (1902) |
| August 27 | 102.0°F (1984) | 45.0°F (1967) | 3.66 in (2009) |
| August 28 | 104.0°F (1984) | 35.1°F (1986) | 2.14 in (1989) |
| August 29 | 109.9°F (1984) | 39.9°F (1988) | 3.04 in (1904) |
| August 30 | 98.1°F (1898) | 43.0°F (1893) | 1.30 in (1965) |
| August 31 | 102.0°F (2013) | 43.0°F (1967) | 2.10 in (1980) |