October weather in Custer, SD
The average temperature in Custer in October is 44.7°F (33.7°F–55.7°F). Average precipitation: 1.45 inches. Average snowfall is 3.9 inches.
October is a fall month in Custer, and is cooler than the annual average of 44.9°F. Daily temperatures swing about 22°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 10h 45m. For travel, October is cool.
Avg High
55.7°F
Avg Low
33.7°F
Precipitation
1.45 in
Snow
3.9 in
October records in Custer
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 84.9°F (1963) | 12.0°F (1958) | 0.58 in (1986) |
| October 2 | 82.0°F (1963) | 19.0°F (1964) | 2.11 in (1930) |
| October 3 | 80.1°F (1981) | 19.0°F (1968) | 0.78 in (1983) |
| October 4 | 80.1°F (1947) | 16.0°F (1964) | 0.95 in (1913) |
| October 5 | 82.9°F (1963) | 14.0°F (1964) | 1.29 in (1994) |
| October 6 | 82.0°F (1963) | 3.9°F (1952) | 0.61 in (1962) |
| October 7 | 82.9°F (1975) | 9.0°F (2000) | 0.88 in (1923) |
| October 8 | 82.0°F (1956) | 8.1°F (1946) | 1.38 in (1924) |
| October 9 | 80.1°F (1953) | 16.0°F (1985) | 0.41 in (2001) |
| October 10 | 82.0°F (1947) | 0.0°F (2009) | 0.32 in (2019) |
| October 11 | 80.1°F (1953) | 9.0°F (2009) | 0.65 in (1985) |
| October 12 | 78.1°F (1975) | 15.1°F (2006) | 2.20 in (2023) |
| October 13 | 78.1°F (1950) | 6.1°F (1969) | 1.07 in (1954) |
| October 14 | 79.0°F (1958) | 6.1°F (1969) | 1.25 in (1942) |
| October 15 | 78.1°F (1964) | 10.9°F (1960) | 1.24 in (1980) |
| October 16 | 84.0°F (1961) | 9.0°F (2018) | 2.62 in (1934) |
| October 17 | 80.1°F (1961) | 12.0°F (1948) | 0.90 in (1998) |
| October 18 | 77.0°F (1955) | 9.0°F (2025) | 1.00 in (1971) |
| October 19 | 79.0°F (2003) | 5.0°F (1976) | 0.75 in (1983) |
| October 20 | 78.1°F (2003) | 10.0°F (1976) | 1.30 in (1924) |
| October 21 | 75.9°F (1950) | 9.0°F (1976) | 1.41 in (1931) |
| October 22 | 77.0°F (2003) | 12.0°F (2020) | 0.60 in (1995) |
| October 23 | 80.1°F (2003) | 8.1°F (1981) | 2.03 in (1941) |
| October 24 | 81.0°F (2003) | 1.0°F (2020) | 0.38 in (1975) |
| October 25 | 75.9°F (1965) | -9.9°F (2020) | 1.09 in (1996) |
| October 26 | 72.0°F (1952) | 9.0°F (1997) | 0.25 in (1923) |
| October 27 | 72.0°F (1943) | 5.0°F (1954) | 0.65 in (1991) |
| October 28 | 73.9°F (1983) | 3.9°F (1991) | 1.48 in (1998) |
| October 29 | 70.0°F (1952) | -5.1°F (1991) | 0.72 in (1961) |
| October 30 | 71.1°F (1964) | -4.0°F (2019) | 0.52 in (1979) |
| October 31 | 73.0°F (1950) | 3.0°F (2006) | 1.59 in (1974) |