Weather on October 15
Sioux Falls, SD
55 Years of Data
Avg High
58°F
Avg Low
35°F
Warmest
1998
58°F avg
Coldest
1992
34°F avg
About This Date
October 15th in Sioux Falls, SD typically brings cool fall weather, with average highs around 58°F and lows near 35°F. Over 55 years of records, the warmest October 15th was in 1998 (58°F average), while the coldest was 1992 (34°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 22% of October 15th dates historically, with the wettest October 15th recording 3.78" of rain. The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
Planning for October 15th in Sioux Falls, SD? Bring layers as temperatures can vary throughout the day.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 61° | 48° | 54° | 0.05" | — |
| 2024 | 56° | 27° | 42° | — | — |
| 2023 | 58° | 41° | 49° | — | — |
| 2022 | 67° | 27° | 47° | — | — |
| 2021 | 58° | 37° | 47° | — | — |
| 2020 | 54° | 29° | 42° | — | — |
| 2019 | 47° | 38° | 42° | — | — |
| 2018 | 46° | 26° | 36° | — | — |
| 2017 | 60° | 34° | 47° | — | — |
| 2016 | 69° | 45° | 57° | — | — |
| 2015 | 61° | 37° | 49° | — | — |
| 2014 | 67° | 31° | 49° | — | — |
| 2013 | 53° | 42° | 48° | 0.2" | — |
| 2012 | 73° | 31° | 52° | — | — |
| 2011 | 65° | 34° | 49° | — | — |
| 2010 | 67° | 32° | 49° | — | — |
| 2009 | 45° | 38° | 41° | 0.18" | — |
| 2008 | 55° | 31° | 43° | — | — |
| 2007 | 52° | 47° | 49° | 3.78" | — |
| 2006 | 65° | 31° | 48° | 0.23" | — |
| 2005 | 68° | 34° | 51° | — | — |
| 2004 | 45° | 33° | 39° | — | — |
| 2003 | 56° | 31° | 43° | — | — |
| 2002 | 52° | 31° | 41° | — | — |
| 2001 | 51° | 31° | 41° | — | — |
| 2000 | 58° | 33° | 45° | — | — |
| 1999 | 64° | 42° | 53° | — | — |
| 1998warmest | 69° | 46° | 58° | 0.13" | — |
| 1997 | 63° | 40° | 51° | 0.05" | — |
| 1996 | 70° | 36° | 53° | — | — |
| 1995 | 62° | 34° | 48° | — | — |
| 1994 | 58° | 53° | 55° | 0.74" | — |
| 1993 | 57° | 48° | 53° | 0.3" | — |
| 1992coldest | 41° | 27° | 34° | — | — |
| 1991 | 58° | 25° | 41° | — | — |
| 1990 | 60° | 32° | 46° | — | — |
| 1989 | 65° | 41° | 53° | 0.08" | — |
| 1988 | 72° | 40° | 56° | — | — |
| 1987 | 50° | 39° | 45° | — | — |
| 1986 | 49° | 28° | 38° | — | — |
| 1985 | 57° | 31° | 44° | — | — |
| 1984 | 53° | 39° | 46° | 2.01" | — |
| 1983 | 65° | 41° | 53° | 0.33" | — |
| 1982 | 60° | 39° | 50° | — | — |
| 1981 | 63° | 37° | 50° | — | — |
| 1980 | 51° | 42° | 47° | — | — |
| 1979 | 69° | 36° | 52° | — | — |
| 1978 | 56° | 34° | 45° | — | — |
| 1977 | 53° | 32° | 43° | — | — |
| 1976 | 48° | 25° | 36° | — | — |
| 1975 | 59° | 32° | 46° | — | — |
| 1974 | 64° | 23° | 44° | — | — |
| 1973 | 62° | 37° | 50° | — | — |
| 1972 | 48° | 23° | 36° | — | — |
| 1971 | 61° | 37° | 49° | — | — |
55 years of data from SIOUX FALLS