October weather in Interior, SD
The average temperature in Interior in October is 51.6°F (37.8°F–65.4°F). Average precipitation: 1.59 inches. Average snowfall is 1.9 inches.
October is a fall month in Interior, and is warmer than the annual average of 50.4°F. Daily temperatures swing about 27.6°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 10h 46m. For travel, October is cool.
Avg High
65.4°F
Avg Low
37.8°F
Precipitation
1.59 in
Snow
1.9 in
October records in Interior
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 93.9°F (1997) | 23.0°F (1985) | 1.22 in (1977) |
| October 2 | 96.1°F (1997) | 26.1°F (1999) | 0.79 in (1982) |
| October 3 | 93.9°F (1997) | 28.9°F (1968) | 1.00 in (2023) |
| October 4 | 97.0°F (1963) | 27.0°F (1999) | 1.79 in (2013) |
| October 5 | 96.1°F (1963) | 28.0°F (2018) | 2.23 in (2013) |
| October 6 | 95.0°F (1975) | 23.0°F (1991) | 1.20 in (1962) |
| October 7 | 90.0°F (1960) | 19.9°F (2000) | 0.62 in (1970) |
| October 8 | 93.0°F (1960) | 24.1°F (2000) | 0.49 in (1993) |
| October 9 | 90.0°F (1963) | 21.9°F (2009) | 2.27 in (1982) |
| October 10 | 91.0°F (2024) | 17.1°F (2009) | 0.61 in (2019) |
| October 11 | 93.0°F (2015) | 19.0°F (2009) | 0.95 in (1973) |
| October 12 | 91.0°F (1956) | 24.1°F (2006) | 2.56 in (2023) |
| October 13 | 91.9°F (1958) | 21.0°F (1986) | 1.43 in (2021) |
| October 14 | 89.1°F (2016) | 19.9°F (2006) | 1.19 in (2013) |
| October 15 | 90.0°F (1965) | 19.0°F (2018) | 1.08 in (1980) |
| October 16 | 89.1°F (1991) | 19.9°F (2001) | 1.43 in (1980) |
| October 17 | 89.1°F (1991) | 19.0°F (1984) | 0.52 in (1988) |
| October 18 | 86.0°F (1963) | 21.0°F (1990) | 1.14 in (1971) |
| October 19 | 87.1°F (1955) | 15.1°F (1960) | 0.68 in (1965) |
| October 20 | 86.0°F (2017) | 21.9°F (1984) | 0.73 in (2021) |
| October 21 | 90.0°F (1992) | 3.9°F (1982) | 0.66 in (2019) |
| October 22 | 88.0°F (1992) | 19.0°F (1976) | 0.52 in (1957) |
| October 23 | 88.0°F (1973) | 17.1°F (1981) | 0.74 in (2015) |
| October 24 | 82.9°F (1992) | 19.0°F (2002) | 0.54 in (1997) |
| October 25 | 81.0°F (1989) | 12.9°F (2020) | 0.27 in (2012) |
| October 26 | 81.0°F (1955) | 0.0°F (2020) | 1.85 in (1996) |
| October 27 | 82.9°F (2016) | 5.0°F (2020) | 0.18 in (2021) |
| October 28 | 82.9°F (1985) | 12.9°F (1984) | 2.05 in (1971) |
| October 29 | 84.0°F (1968) | 10.9°F (1991) | 0.97 in (1996) |
| October 30 | 84.9°F (1968) | 1.9°F (1991) | 0.48 in (1979) |
| October 31 | 84.0°F (1999) | 1.9°F (1991) | 0.55 in (1992) |