Weather on September 29
Sioux Falls, SD
55 Years of Data
Avg High
71°F
Avg Low
46°F
Warmest
2023
77°F avg
Coldest
1985
40°F avg
About This Date
September 29th in Sioux Falls, SD typically brings pleasant fall weather, with average highs around 71°F and lows near 46°F — a 25°F daily swing. Over 55 years of records, the warmest September 29th was in 2023 (77°F average), while the coldest was 1985 (40°F) — a 37°F range across recorded history. Rain or other precipitation has occurred on about 22% of September 29th dates historically, with the wettest September 29th recording 2.67" of rain. The last decade has been 6.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.7°F warmer on this date compared to 20-30 years ago.
Planning for September 29th 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 | 92° | 51° | 71° | — | — |
| 2024 | 88° | 49° | 68° | — | — |
| 2023warmest | 89° | 65° | 77° | — | — |
| 2022 | 77° | 49° | 63° | — | — |
| 2021 | 80° | 64° | 72° | 0.33" | — |
| 2020 | 80° | 42° | 61° | — | — |
| 2019 | 75° | 55° | 65° | 0.1" | — |
| 2018 | 47° | 36° | 41° | — | — |
| 2017 | 71° | 46° | 59° | — | — |
| 2016 | 69° | 40° | 54° | — | — |
| 2015 | 70° | 46° | 58° | 0.08" | — |
| 2014 | 70° | 54° | 62° | 0.13" | — |
| 2013 | 80° | 46° | 63° | — | — |
| 2012 | 82° | 39° | 61° | — | — |
| 2011 | 70° | 50° | 60° | — | — |
| 2010 | 74° | 52° | 63° | — | — |
| 2009 | 65° | 35° | 50° | — | — |
| 2008 | 66° | 42° | 54° | — | — |
| 2007 | 81° | 61° | 71° | 0.53" | — |
| 2006 | 72° | 39° | 55° | — | — |
| 2005 | 69° | 34° | 51° | — | — |
| 2004 | 70° | 43° | 56° | — | — |
| 2003 | 57° | 32° | 45° | — | — |
| 2002 | 70° | 51° | 60° | — | — |
| 2001 | 73° | 50° | 62° | — | — |
| 2000 | 79° | 51° | 65° | — | — |
| 1999 | 64° | 30° | 47° | — | — |
| 1998 | 80° | 52° | 66° | — | — |
| 1997 | 74° | 49° | 61° | — | — |
| 1996 | 59° | 43° | 51° | — | — |
| 1995 | 74° | 66° | 70° | 0.76" | — |
| 1994 | 78° | 46° | 62° | — | — |
| 1993 | 62° | 35° | 49° | — | — |
| 1992 | 71° | 37° | 54° | — | — |
| 1991 | 85° | 50° | 67° | — | — |
| 1990 | 63° | 47° | 55° | 0.33" | — |
| 1989 | 81° | 40° | 60° | — | — |
| 1988 | 61° | 53° | 57° | 0.79" | — |
| 1987 | 72° | 44° | 58° | — | — |
| 1986 | 66° | 46° | 56° | — | — |
| 1985coldest | 42° | 37° | 40° | 0.3" | — |
| 1984 | 61° | 26° | 43° | — | — |
| 1983 | 68° | 58° | 63° | 1.07" | — |
| 1982 | 74° | 47° | 60° | — | — |
| 1981 | 83° | 50° | 66° | — | — |
| 1980 | 80° | 57° | 69° | — | — |
| 1979 | 80° | 42° | 61° | — | — |
| 1978 | 65° | 52° | 58° | — | — |
| 1977 | 64° | 57° | 61° | 0.86" | — |
| 1976 | 76° | 32° | 54° | — | — |
| 1975 | 68° | 36° | 52° | — | — |
| 1974 | 68° | 31° | 49° | — | — |
| 1973 | 62° | 53° | 58° | 2.67" | — |
| 1972 | 54° | 31° | 42° | — | — |
| 1971 | 74° | 41° | 57° | — | — |
55 years of data from SIOUX FALLS