August weather in Yankton, SD
The average temperature in Yankton in August is 73.1°F (61.5°F–84.8°F). Average precipitation: 3.26 inches.
August is a summer month in Yankton, and is warmer than the annual average of 48.7°F. Daily temperatures swing about 23.3°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 13h 45m. For travel, August is a comfortable month to visit.
Avg High
84.8°F
Avg Low
61.5°F
Precipitation
3.26 in
Daylight
13h 45m
August records in Yankton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 105.1°F (1988) | 50.0°F (1995) | 2.26 in (1975) |
| August 2 | 105.1°F (1936) | 48.0°F (2002) | 2.87 in (1933) |
| August 3 | 107.1°F (1947) | 45.0°F (1933) | 2.55 in (1944) |
| August 4 | 111.9°F (1934) | 46.0°F (1974) | 2.00 in (2002) |
| August 5 | 104.0°F (1934) | 46.9°F (1994) | 2.20 in (1995) |
| August 6 | 100.9°F (1934) | 46.0°F (1994) | 1.56 in (2013) |
| August 7 | 102.9°F (1968) | 46.0°F (1989) | 1.30 in (1992) |
| August 8 | 104.0°F (1980) | 46.0°F (1989) | 2.08 in (2000) |
| August 9 | 109.0°F (1947) | 48.0°F (1966) | 1.74 in (2023) |
| August 10 | 106.0°F (1947) | 43.0°F (1985) | 1.94 in (1939) |
| August 11 | 100.0°F (1936) | 45.0°F (1985) | 0.93 in (2013) |
| August 12 | 99.0°F (1936) | 41.0°F (1964) | 1.50 in (1985) |
| August 13 | 104.0°F (1938) | 42.1°F (1967) | 1.98 in (1966) |
| August 14 | 102.9°F (1965) | 44.1°F (2004) | 1.61 in (1959) |
| August 15 | 108.0°F (1937) | 44.1°F (2004) | 2.88 in (2022) |
| August 16 | 107.1°F (1988) | 46.9°F (1992) | 3.39 in (1945) |
| August 17 | 107.1°F (1936) | 44.1°F (1943) | 1.37 in (2000) |
| August 18 | 102.9°F (1934) | 44.1°F (2002) | 3.73 in (1937) |
| August 19 | 102.9°F (1983) | 42.1°F (1967) | 1.86 in (2011) |
| August 20 | 102.0°F (1947) | 35.1°F (1950) | 1.01 in (2021) |
| August 21 | 100.9°F (1955) | 43.0°F (1950) | 3.70 in (1965) |
| August 22 | 106.0°F (1938) | 46.0°F (2004) | 0.85 in (2007) |
| August 23 | 102.9°F (1971) | 44.1°F (1966) | 2.19 in (1995) |
| August 24 | 111.0°F (1936) | 43.0°F (1934) | 2.03 in (1960) |
| August 25 | 100.9°F (2003) | 45.0°F (1964) | 1.58 in (1992) |
| August 26 | 105.1°F (1955) | 43.0°F (1985) | 1.54 in (1937) |
| August 27 | 107.1°F (1973) | 44.1°F (1964) | 0.95 in (1951) |
| August 28 | 100.9°F (1990) | 39.0°F (1986) | 2.78 in (1960) |
| August 29 | 100.9°F (1984) | 42.1°F (1946) | 1.31 in (1942) |
| August 30 | 106.0°F (2012) | 41.0°F (1935) | 0.91 in (1953) |
| August 31 | 102.9°F (2012) | 41.0°F (1967) | 0.95 in (2021) |