Weather on September 11
Sioux Falls, SD
55 Years of Data
Avg High
77°F
Avg Low
53°F
Warmest
2012
81°F avg
Coldest
1989
48°F avg
About This Date
September 11th in Sioux Falls, SD typically brings pleasant fall weather, with average highs around 77°F and lows near 53°F. Over 55 years of records, the warmest September 11th was in 2012 (81°F average), while the coldest was 1989 (48°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 33% of September 11th dates historically, with the wettest September 11th recording 3.76" of rain. The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
Planning for September 11th in Sioux Falls, SD? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 86° | 59° | 73° | — | — |
| 2024 | 87° | 61° | 74° | — | — |
| 2023 | 79° | 49° | 64° | — | — |
| 2022 | 78° | 44° | 61° | — | — |
| 2021 | 84° | 61° | 72° | — | — |
| 2020 | 57° | 51° | 54° | 0.64" | — |
| 2019 | 73° | 61° | 67° | 2.29" | — |
| 2018 | 85° | 62° | 73° | — | — |
| 2017 | 81° | 61° | 71° | — | — |
| 2016 | 80° | 56° | 68° | — | — |
| 2015 | 64° | 44° | 54° | — | — |
| 2014 | 54° | 47° | 50° | 0.18" | — |
| 2013 | 86° | 60° | 73° | — | — |
| 2012warmest | 96° | 67° | 81° | — | — |
| 2011 | 87° | 54° | 70° | — | — |
| 2010 | 74° | 51° | 62° | — | — |
| 2009 | 72° | 63° | 67° | 0.2" | — |
| 2008 | 70° | 56° | 63° | 0.64" | — |
| 2007 | 65° | 40° | 52° | — | — |
| 2006 | 63° | 49° | 56° | — | — |
| 2005 | 89° | 71° | 80° | — | — |
| 2004 | 84° | 61° | 72° | — | — |
| 2003 | 61° | 50° | 55° | 0.91" | — |
| 2002 | 77° | 48° | 63° | — | — |
| 2001 | 85° | 54° | 69° | — | — |
| 2000 | 76° | 47° | 61° | — | — |
| 1999 | 79° | 48° | 63° | — | — |
| 1998 | 90° | 63° | 76° | 0.05" | — |
| 1997 | 71° | 46° | 59° | — | — |
| 1996 | 67° | 45° | 56° | — | — |
| 1995 | 76° | 54° | 65° | — | — |
| 1994 | 87° | 66° | 77° | — | — |
| 1993 | 80° | 54° | 67° | — | — |
| 1992 | 76° | 46° | 61° | — | — |
| 1991 | 75° | 58° | 66° | 3.76" | — |
| 1990 | 93° | 58° | 75° | — | — |
| 1989coldest | 57° | 40° | 48° | 0.1" | — |
| 1988 | 89° | 60° | 75° | 0.03" | — |
| 1987 | 71° | 41° | 56° | 0.43" | — |
| 1986 | 62° | 46° | 54° | — | — |
| 1985 | 67° | 52° | 59° | — | — |
| 1984 | 73° | 42° | 58° | 2.69" | — |
| 1983 | 75° | 42° | 59° | — | — |
| 1982 | 80° | 59° | 70° | 0.36" | — |
| 1981 | 86° | 54° | 70° | — | — |
| 1980 | 82° | 60° | 71° | 0.03" | — |
| 1979 | 74° | 58° | 66° | 1.24" | — |
| 1978 | 91° | 65° | 78° | 3.23" | — |
| 1977 | 75° | 57° | 66° | 0.28" | — |
| 1976 | 88° | 51° | 69° | — | — |
| 1975 | 63° | 39° | 51° | — | — |
| 1974 | 75° | 51° | 63° | 0.28" | — |
| 1973 | 76° | 44° | 60° | — | — |
| 1972 | 71° | 59° | 65° | — | — |
| 1971 | 82° | 45° | 63° | — | — |
55 years of data from SIOUX FALLS