Weather on August 9
Sioux Falls, SD
55 Years of Data
Avg High
83°F
Avg Low
60°F
Warmest
1993
81°F avg
Coldest
1982
57°F avg
About This Date
August 9th in Sioux Falls, SD typically brings warm summer weather, with average highs around 83°F and lows near 60°F. Over 55 years of records, the warmest August 9th was in 1993 (81°F average), while the coldest was 1982 (57°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 27% of August 9th dates historically, with the wettest August 9th recording 1.7" 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 August 9th in Sioux Falls, SD? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 66° | 74° | — | — |
| 2024 | 75° | 51° | 63° | — | — |
| 2023 | 86° | 63° | 74° | — | — |
| 2022 | 86° | 58° | 72° | — | — |
| 2021 | 87° | 62° | 75° | — | — |
| 2020 | 91° | 67° | 79° | 0.48" | — |
| 2019 | 82° | 57° | 70° | 0.66" | — |
| 2018 | 85° | 64° | 74° | — | — |
| 2017 | 82° | 61° | 71° | 1.7" | — |
| 2016 | 90° | 68° | 79° | — | — |
| 2015 | 88° | 62° | 75° | 0.05" | — |
| 2014 | 79° | 68° | 73° | — | — |
| 2013 | 79° | 52° | 65° | — | — |
| 2012 | 84° | 57° | 71° | — | — |
| 2011 | 75° | 54° | 64° | — | — |
| 2010 | 86° | 68° | 77° | — | — |
| 2009 | 83° | 60° | 71° | — | — |
| 2008 | 86° | 61° | 73° | — | — |
| 2007 | 92° | 67° | 79° | — | — |
| 2006 | 82° | 71° | 77° | 0.03" | — |
| 2005 | 86° | 67° | 76° | — | — |
| 2004 | 70° | 57° | 63° | — | — |
| 2003 | 85° | 65° | 75° | 0.08" | — |
| 2002 | 79° | 63° | 71° | 0.69" | — |
| 2001 | 77° | 56° | 66° | — | — |
| 2000 | 86° | 57° | 72° | — | — |
| 1999 | 89° | 64° | 77° | — | — |
| 1998 | 82° | 65° | 73° | — | — |
| 1997 | 72° | 55° | 63° | — | — |
| 1996 | 86° | 57° | 72° | — | — |
| 1995 | 84° | 64° | 74° | — | — |
| 1994 | 71° | 56° | 63° | 1.3" | — |
| 1993warmest | 91° | 71° | 81° | — | — |
| 1992 | 91° | 70° | 80° | 1.45" | — |
| 1991 | 80° | 53° | 67° | — | — |
| 1990 | 89° | 61° | 75° | — | — |
| 1989 | 86° | 57° | 72° | — | — |
| 1988 | 88° | 56° | 72° | — | — |
| 1987 | 89° | 55° | 72° | — | — |
| 1986 | 82° | 59° | 71° | 0.18" | — |
| 1985 | 79° | 48° | 63° | 0.64" | — |
| 1984 | 80° | 58° | 69° | — | — |
| 1983 | 89° | 63° | 76° | — | — |
| 1982coldest | 65° | 50° | 57° | — | — |
| 1981 | 79° | 57° | 68° | — | — |
| 1980 | 73° | 59° | 66° | 1.45" | — |
| 1979 | 83° | 68° | 75° | 0.03" | — |
| 1978 | 82° | 54° | 68° | — | — |
| 1977 | 86° | 65° | 75° | 0.91" | — |
| 1976 | 90° | 64° | 77° | — | — |
| 1975 | 91° | 58° | 74° | — | — |
| 1974 | 69° | 64° | 67° | 1.24" | — |
| 1973 | 83° | 56° | 69° | — | — |
| 1972 | 74° | 43° | 58° | — | — |
| 1971 | 92° | 67° | 79° | — | — |
55 years of data from SIOUX FALLS