May weather in Bison, SD
The average temperature in Bison in May is 55.4°F (42.7°F–68.2°F). Average precipitation: 3.11 inches. Average snowfall is 0.7 inches.
May is a spring month in Bison, and is warmer than the annual average of 45.7°F. Daily temperatures swing about 25.5°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 14h 42m. For travel, May is a comfortable month to visit.
Avg High
68.2°F
Avg Low
42.7°F
Precipitation
3.11 in
Snow
0.7 in
May records in Bison
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 89.1°F (1955) | 15.1°F (1950) | 0.90 in (1972) |
| May 2 | 88.0°F (1952) | 19.0°F (1967) | 1.16 in (2008) |
| May 3 | 87.1°F (1952) | 14.0°F (1967) | 1.00 in (1987) |
| May 4 | 90.0°F (1966) | 18.0°F (1967) | 0.80 in (2012) |
| May 5 | 86.0°F (2016) | 19.9°F (1967) | 1.84 in (2007) |
| May 6 | 90.0°F (1934) | 26.1°F (1982) | 1.20 in (1995) |
| May 7 | 91.9°F (1992) | 23.0°F (1938) | 1.76 in (1921) |
| May 8 | 93.9°F (1934) | 21.0°F (1945) | 1.72 in (1995) |
| May 9 | 88.0°F (1992) | 19.0°F (1945) | 1.42 in (1986) |
| May 10 | 87.1°F (1958) | 16.0°F (1945) | 1.16 in (2015) |
| May 11 | 93.0°F (2025) | 21.0°F (1979) | 1.35 in (1985) |
| May 12 | 93.0°F (2025) | 10.9°F (1943) | 2.15 in (2023) |
| May 13 | 93.0°F (2001) | 21.0°F (2004) | 2.24 in (2023) |
| May 14 | 91.9°F (2001) | 25.0°F (1945) | 1.47 in (1982) |
| May 15 | 97.0°F (1936) | 26.1°F (1921) | 2.12 in (2025) |
| May 16 | 93.9°F (1934) | 25.0°F (2016) | 1.52 in (2015) |
| May 17 | 95.0°F (1934) | 32.0°F (1916) | 1.50 in (2019) |
| May 18 | 96.1°F (1934) | 28.9°F (1942) | 1.70 in (1962) |
| May 19 | 91.9°F (1948) | 30.0°F (1971) | 2.25 in (1938) |
| May 20 | 91.9°F (1992) | 28.0°F (1968) | 2.10 in (1982) |
| May 21 | 91.9°F (2006) | 30.0°F (2022) | 1.76 in (1962) |
| May 22 | 93.0°F (1980) | 25.0°F (1963) | 1.66 in (1962) |
| May 23 | 91.9°F (1980) | 28.0°F (2022) | 3.20 in (1933) |
| May 24 | 89.1°F (1977) | 30.9°F (1949) | 2.27 in (2010) |
| May 25 | 90.0°F (1936) | 32.0°F (1984) | 2.06 in (1960) |
| May 26 | 93.9°F (1934) | 26.1°F (1984) | 1.80 in (1973) |
| May 27 | 100.9°F (1934) | 28.0°F (1932) | 1.60 in (1956) |
| May 28 | 102.0°F (1934) | 27.0°F (1952) | 2.84 in (1941) |
| May 29 | 99.0°F (1934) | 23.0°F (1947) | 1.10 in (1953) |
| May 30 | 99.0°F (1939) | 33.1°F (1983) | 1.30 in (1937) |
| May 31 | 90.0°F (1933) | 34.0°F (1917) | 1.06 in (1989) |