August weather in Vermillion, SD
The average temperature in Vermillion in August is 72.0°F (60.7°F–83.3°F). Average precipitation: 2.88 inches.
August is a summer month in Vermillion, and is warmer than the annual average of 48.8°F. Daily temperatures swing about 22.6°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 13h 45m. For travel, August is a comfortable month to visit.
Avg High
83.3°F
Avg Low
60.7°F
Precipitation
2.88 in
Daylight
13h 45m
August records in Vermillion
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 105.1°F (1901) | 46.9°F (1968) | 1.76 in (1903) |
| August 2 | 106.0°F (1930) | 46.0°F (1915) | 2.35 in (1945) |
| August 3 | 111.9°F (1930) | 45.0°F (1915) | 1.19 in (2025) |
| August 4 | 108.0°F (1934) | 45.0°F (1974) | 1.68 in (2005) |
| August 5 | 102.9°F (1934) | 44.1°F (1994) | 1.35 in (1995) |
| August 6 | 100.0°F (1934) | 46.0°F (1990) | 2.75 in (1953) |
| August 7 | 100.9°F (1980) | 46.0°F (1989) | 1.88 in (1992) |
| August 8 | 102.0°F (1936) | 48.0°F (1916) | 1.38 in (1909) |
| August 9 | 106.0°F (1947) | 44.1°F (1972) | 1.75 in (2023) |
| August 10 | 105.1°F (1947) | 44.1°F (1967) | 2.05 in (1961) |
| August 11 | 99.0°F (1935) | 45.0°F (1931) | 1.56 in (1953) |
| August 12 | 99.0°F (1936) | 34.0°F (1989) | 1.63 in (1905) |
| August 13 | 100.0°F (1938) | 39.0°F (1964) | 1.77 in (1966) |
| August 14 | 99.0°F (1904) | 39.9°F (1916) | 1.32 in (1951) |
| August 15 | 107.1°F (1937) | 46.9°F (1992) | 3.32 in (2022) |
| August 16 | 105.1°F (1937) | 46.9°F (1970) | 1.85 in (1945) |
| August 17 | 104.0°F (1983) | 42.1°F (2012) | 1.33 in (1986) |
| August 18 | 105.1°F (1983) | 42.1°F (1910) | 6.38 in (1937) |
| August 19 | 104.0°F (1983) | 39.0°F (1967) | 0.96 in (1979) |
| August 20 | 102.0°F (1947) | 37.9°F (1950) | 2.60 in (1965) |
| August 21 | 99.0°F (1942) | 41.0°F (1967) | 2.07 in (1989) |
| August 22 | 102.9°F (1938) | 39.9°F (1923) | 2.00 in (2002) |
| August 23 | 102.0°F (1938) | 42.1°F (1966) | 1.08 in (1909) |
| August 24 | 109.9°F (1936) | 39.9°F (1934) | 1.12 in (1967) |
| August 25 | 108.0°F (1936) | 41.0°F (1958) | 1.98 in (1992) |
| August 26 | 106.0°F (1973) | 37.9°F (1916) | 1.67 in (2017) |
| August 27 | 106.0°F (1973) | 39.0°F (1916) | 1.44 in (1936) |
| August 28 | 104.0°F (1984) | 34.0°F (1916) | 3.71 in (1960) |
| August 29 | 104.0°F (1948) | 42.1°F (1909) | 0.90 in (1942) |
| August 30 | 102.0°F (2012) | 39.0°F (1935) | 1.68 in (1993) |
| August 31 | 104.0°F (2012) | 36.0°F (1967) | 1.53 in (2021) |