Weather on June 21
Sioux Falls, SD
55 Years of Data
Avg High
82°F
Avg Low
60°F
Warmest
1988
94°F avg
Coldest
1972
55°F avg
About This Date
June 21st in Sioux Falls, SD typically brings warm summer weather, with average highs around 82°F and lows near 60°F. Over 55 years of records, the warmest June 21st was in 1988 (94°F average), while the coldest was 1972 (55°F) — a 39°F range across recorded history. Rain or other precipitation has occurred on about 53% of June 21st dates historically, with the wettest June 21st recording 7.59" of rain. The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in Sioux Falls, SD? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 99° | 78° | 88° | 0.05" | — |
| 2024 | 78° | 64° | 71° | 7.59" | — |
| 2023 | 90° | 66° | 78° | — | — |
| 2022 | 85° | 66° | 75° | — | — |
| 2021 | 73° | 53° | 63° | — | — |
| 2020 | 83° | 58° | 70° | — | — |
| 2019 | 77° | 59° | 68° | 0.03" | — |
| 2018 | 73° | 56° | 64° | 3.4" | — |
| 2017 | 87° | 58° | 72° | 0.91" | — |
| 2016 | 83° | 54° | 68° | 0.05" | — |
| 2015 | 86° | 61° | 73° | — | — |
| 2014 | 86° | 63° | 74° | 0.66" | — |
| 2013 | 87° | 67° | 77° | 0.51" | — |
| 2012 | 78° | 55° | 67° | — | — |
| 2011 | 70° | 59° | 64° | 0.36" | — |
| 2010 | 81° | 62° | 71° | 3.25" | — |
| 2009 | 83° | 65° | 74° | 1.12" | — |
| 2008 | 84° | 54° | 69° | 0.08" | — |
| 2007 | 82° | 67° | 74° | 0.48" | — |
| 2006 | 82° | 62° | 72° | 0.13" | — |
| 2005 | 81° | 65° | 73° | 0.08" | — |
| 2004 | 71° | 51° | 61° | — | — |
| 2003 | 80° | 60° | 70° | 0.2" | — |
| 2002 | 88° | 66° | 77° | 0.13" | — |
| 2001 | 74° | 53° | 63° | — | — |
| 2000 | 79° | 53° | 66° | — | — |
| 1999 | 85° | 65° | 75° | — | — |
| 1998 | 78° | 56° | 67° | 0.03" | — |
| 1997 | 80° | 61° | 70° | — | — |
| 1996 | 82° | 61° | 71° | — | — |
| 1995 | 93° | 72° | 82° | — | — |
| 1994 | 88° | 62° | 75° | — | — |
| 1993 | 87° | 56° | 71° | — | — |
| 1992 | 72° | 45° | 58° | — | — |
| 1991 | 75° | 60° | 68° | 2.82" | — |
| 1990 | 73° | 58° | 65° | 0.43" | — |
| 1989 | 87° | 59° | 73° | — | — |
| 1988warmest | 110° | 78° | 94° | — | — |
| 1987 | 91° | 65° | 78° | 0.13" | — |
| 1986 | 89° | 64° | 77° | 2.9" | — |
| 1985 | 85° | 55° | 70° | — | — |
| 1984 | 75° | 62° | 69° | 4.85" | — |
| 1983 | 87° | 73° | 80° | — | — |
| 1982 | 77° | 46° | 62° | — | — |
| 1981 | 80° | 55° | 68° | 0.3" | — |
| 1980 | 87° | 60° | 74° | 0.05" | — |
| 1979 | 81° | 58° | 69° | — | — |
| 1978 | 77° | 44° | 61° | 0.58" | — |
| 1977 | 68° | 59° | 64° | 0.94" | — |
| 1976 | 93° | 67° | 80° | — | — |
| 1975 | 79° | 64° | 71° | 1.27" | — |
| 1974 | 90° | 64° | 77° | 2.06" | — |
| 1973 | 76° | 48° | 62° | — | — |
| 1972coldest | 70° | 40° | 55° | — | — |
| 1971 | 82° | 56° | 69° | — | — |
55 years of data from SIOUX FALLS