Weather on August 17
Sioux Falls, SD
55 Years of Data
Avg High
83°F
Avg Low
61°F
Warmest
1988
87°F avg
Coldest
2012
58°F avg
About This Date
August 17th in Sioux Falls, SD typically brings warm summer weather, with average highs around 83°F and lows near 61°F. Over 55 years of records, the warmest August 17th was in 1988 (87°F average), while the coldest was 2012 (58°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 24% of August 17th dates historically, with the wettest August 17th recording 2.95" of rain. The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
Planning for August 17th in Sioux Falls, SD? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 85° | 72° | 78° | 0.46" | — |
| 2024 | 81° | 61° | 71° | — | — |
| 2023 | 77° | 58° | 67° | — | — |
| 2022 | 83° | 58° | 70° | — | — |
| 2021 | 91° | 70° | 80° | — | — |
| 2020 | 85° | 59° | 72° | — | — |
| 2019 | 85° | 60° | 72° | 1.73" | — |
| 2018 | 84° | 62° | 73° | — | — |
| 2017 | 80° | 61° | 70° | — | — |
| 2016 | 89° | 61° | 75° | — | — |
| 2015 | 69° | 59° | 64° | 2.34" | — |
| 2014 | 84° | 69° | 77° | — | — |
| 2013 | 79° | 59° | 69° | — | — |
| 2012coldest | 76° | 40° | 58° | — | — |
| 2011 | 81° | 52° | 66° | — | — |
| 2010 | 78° | 59° | 69° | — | — |
| 2009 | 77° | 55° | 66° | — | — |
| 2008 | 83° | 60° | 71° | — | — |
| 2007 | 77° | 59° | 68° | 1.8" | — |
| 2006 | 78° | 69° | 74° | — | — |
| 2005 | 75° | 65° | 70° | 0.36" | — |
| 2004 | 78° | 55° | 67° | — | — |
| 2003 | 97° | 71° | 84° | — | — |
| 2002 | 77° | 49° | 63° | — | — |
| 2001 | 84° | 50° | 67° | — | — |
| 2000 | 75° | 54° | 64° | — | — |
| 1999 | 87° | 53° | 70° | 0.1" | — |
| 1998 | 84° | 67° | 75° | — | — |
| 1997 | 69° | 51° | 60° | — | — |
| 1996 | 77° | 52° | 64° | — | — |
| 1995 | 95° | 73° | 84° | — | — |
| 1994 | 87° | 65° | 76° | 0.18" | — |
| 1993 | 87° | 66° | 77° | — | — |
| 1992 | 81° | 61° | 71° | 0.3" | — |
| 1991 | 88° | 58° | 73° | — | — |
| 1990 | 93° | 73° | 83° | — | — |
| 1989 | 85° | 57° | 71° | — | — |
| 1988warmest | 98° | 75° | 87° | — | — |
| 1987 | 83° | 54° | 68° | — | — |
| 1986 | 80° | 59° | 70° | — | — |
| 1985 | 70° | 51° | 60° | 0.23" | — |
| 1984 | 80° | 66° | 73° | 0.33" | — |
| 1983 | 91° | 68° | 80° | — | — |
| 1982 | 87° | 67° | 77° | — | — |
| 1981 | 72° | 55° | 63° | — | — |
| 1980 | 76° | 58° | 67° | — | — |
| 1979 | 83° | 64° | 73° | 0.05" | — |
| 1978 | 86° | 63° | 74° | — | — |
| 1977 | 72° | 54° | 63° | — | — |
| 1976 | 96° | 68° | 82° | — | — |
| 1975 | 67° | 55° | 61° | 2.95" | — |
| 1974 | 81° | 57° | 69° | 2.84" | — |
| 1973 | 94° | 66° | 80° | — | — |
| 1972 | 98° | 73° | 86° | — | — |
| 1971 | 94° | 70° | 82° | — | — |
55 years of data from SIOUX FALLS