Weather on October 9
Sioux Falls, SD
55 Years of Data
Avg High
65°F
Avg Low
40°F
Warmest
2020
71°F avg
Coldest
1985
31°F avg
About This Date
October 9th in Sioux Falls, SD typically brings mild fall weather, with average highs around 65°F and lows near 40°F — a 25°F daily swing. Over 55 years of records, the warmest October 9th was in 2020 (71°F average), while the coldest was 1985 (31°F) — a 40°F range across recorded history. Precipitation has occurred on 27% of recorded October 9th dates, with snow falling 4% of the time (heaviest snowfall: 1.4"). The last decade has been 4.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.5°F warmer on this date compared to 20-30 years ago.
Planning for October 9th in Sioux Falls, SD? Great weather for outdoor activities.
Warming Trend
1.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 54° | 67° | — | — |
| 2024 | 84° | 40° | 62° | — | — |
| 2023 | 63° | 35° | 49° | — | — |
| 2022 | 76° | 40° | 58° | — | — |
| 2021 | 80° | 57° | 69° | — | — |
| 2020warmest | 85° | 57° | 71° | — | — |
| 2019 | 72° | 54° | 63° | — | — |
| 2018 | 47° | 42° | 44° | 3.94" | — |
| 2017 | 52° | 33° | 42° | 0.03" | — |
| 2016 | 69° | 33° | 51° | — | — |
| 2015 | 63° | 42° | 52° | — | — |
| 2014 | 56° | 36° | 46° | — | — |
| 2013 | 78° | 52° | 65° | — | — |
| 2012 | 54° | 33° | 43° | — | — |
| 2011 | 78° | 59° | 69° | — | — |
| 2010 | 72° | 49° | 60° | 0.05" | — |
| 2009 | 50° | 25° | 37° | 0.36" | 1.4" |
| 2008 | 61° | 36° | 48° | 0.03" | — |
| 2007 | 62° | 45° | 53° | — | — |
| 2006 | 57° | 43° | 50° | — | — |
| 2005 | 62° | 36° | 49° | — | — |
| 2004 | 70° | 35° | 52° | — | — |
| 2003 | 77° | 60° | 69° | — | — |
| 2002 | 61° | 27° | 44° | 0.51" | — |
| 2001 | 65° | 41° | 53° | 1.17" | — |
| 2000 | 59° | 28° | 44° | — | — |
| 1999 | 81° | 41° | 61° | — | — |
| 1998 | 72° | 48° | 60° | — | — |
| 1997 | 60° | 41° | 51° | — | — |
| 1996 | 60° | 35° | 48° | — | — |
| 1995 | 68° | 39° | 54° | — | — |
| 1994 | 64° | 33° | 49° | — | — |
| 1993 | 46° | 25° | 35° | — | — |
| 1992 | 55° | 40° | 47° | 0.03" | — |
| 1991 | 71° | 37° | 54° | — | — |
| 1990 | 55° | 26° | 41° | — | — |
| 1989 | 69° | 35° | 52° | — | — |
| 1988 | 70° | 33° | 51° | — | — |
| 1987 | 42° | 24° | 33° | — | — |
| 1986 | 54° | 33° | 43° | — | — |
| 1985coldest | 38° | 25° | 31° | 0.05" | 0.2" |
| 1984 | 65° | 53° | 59° | 0.05" | — |
| 1983 | 61° | 47° | 54° | 0.03" | — |
| 1982 | 63° | 47° | 55° | 1.17" | — |
| 1981 | 60° | 47° | 53° | 0.05" | — |
| 1980 | 89° | 50° | 70° | — | — |
| 1979 | 56° | 33° | 44° | — | — |
| 1978 | 64° | 42° | 53° | — | — |
| 1977 | 62° | 29° | 45° | — | — |
| 1976 | 67° | 32° | 49° | — | — |
| 1975 | 65° | 33° | 49° | — | — |
| 1974 | 75° | 29° | 52° | — | — |
| 1973 | 76° | 60° | 68° | 11.53" | — |
| 1972 | 60° | 34° | 47° | — | — |
| 1971 | 54° | 33° | 43° | 0.08" | — |
55 years of data from SIOUX FALLS