August weather in Bison, SD
The average temperature in Bison in August is 71.3°F (57.0°F–85.6°F). Average precipitation: 1.83 inches.
August is a summer month in Bison, and is warmer than the annual average of 45.7°F. Daily temperatures swing about 28.6°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 13h 56m. For travel, August is a comfortable month to visit.
Avg High
85.6°F
Avg Low
57.0°F
Precipitation
1.83 in
Daylight
13h 56m
August records in Bison
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 104.0°F (1936) | 46.9°F (1917) | 1.05 in (1981) |
| August 2 | 102.0°F (1938) | 46.0°F (1971) | 0.98 in (2013) |
| August 3 | 106.0°F (1947) | 37.9°F (1978) | 1.14 in (2023) |
| August 4 | 106.0°F (1941) | 45.0°F (1974) | 1.10 in (2008) |
| August 5 | 102.9°F (1941) | 43.0°F (1917) | 1.46 in (1918) |
| August 6 | 102.9°F (1937) | 46.9°F (1996) | 0.98 in (2015) |
| August 7 | 105.1°F (1949) | 43.0°F (1953) | 0.75 in (1947) |
| August 8 | 100.9°F (1958) | 42.1°F (1939) | 1.42 in (1957) |
| August 9 | 106.0°F (1947) | 37.9°F (1917) | 1.22 in (1996) |
| August 10 | 104.0°F (1935) | 45.0°F (1966) | 1.25 in (1980) |
| August 11 | 104.0°F (2000) | 39.0°F (1952) | 1.42 in (1917) |
| August 12 | 104.0°F (1938) | 36.0°F (1964) | 3.32 in (1999) |
| August 13 | 100.0°F (1955) | 39.9°F (1977) | 0.85 in (1998) |
| August 14 | 104.0°F (1937) | 42.1°F (1985) | 0.55 in (1966) |
| August 15 | 102.0°F (1935) | 44.1°F (1974) | 0.49 in (1932) |
| August 16 | 102.9°F (1973) | 41.0°F (2012) | 0.46 in (1935) |
| August 17 | 105.1°F (1973) | 39.9°F (1977) | 0.92 in (1940) |
| August 18 | 106.0°F (1973) | 33.1°F (1950) | 1.43 in (2015) |
| August 19 | 102.0°F (1948) | 41.0°F (2004) | 1.55 in (1949) |
| August 20 | 100.0°F (1942) | 39.9°F (1950) | 0.61 in (2014) |
| August 21 | 102.9°F (1971) | 42.1°F (1964) | 0.67 in (1916) |
| August 22 | 107.1°F (1960) | 41.0°F (1974) | 2.20 in (1933) |
| August 23 | 104.0°F (1949) | 37.9°F (1966) | 1.32 in (2014) |
| August 24 | 102.0°F (2000) | 41.0°F (1934) | 0.74 in (1989) |
| August 25 | 98.1°F (2012) | 37.9°F (1992) | 1.26 in (1995) |
| August 26 | 104.0°F (1970) | 39.9°F (1957) | 0.87 in (1943) |
| August 27 | 105.1°F (1937) | 39.9°F (1976) | 1.37 in (1954) |
| August 28 | 100.0°F (1969) | 39.9°F (1962) | 1.30 in (2013) |
| August 29 | 102.9°F (2012) | 39.0°F (1956) | 1.74 in (1951) |
| August 30 | 102.0°F (2012) | 37.0°F (1992) | 0.62 in (1959) |
| August 31 | 98.1°F (1954) | 35.1°F (1958) | 2.24 in (2025) |