Weather on May 15
Sioux Falls, SD
55 Years of Data
Avg High
72°F
Avg Low
45°F
Warmest
2001
75°F avg
Coldest
2014
38°F avg
About This Date
May 15th in Sioux Falls, SD typically brings pleasant spring weather, with average highs around 72°F and lows near 45°F — a 27°F daily swing. Over 55 years of records, the warmest May 15th was in 2001 (75°F average), while the coldest was 2014 (38°F) — a 37°F range across recorded history. Rain or other precipitation has occurred on about 29% of May 15th dates historically, with the wettest May 15th recording 3.25" of rain. The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
Planning for May 15th in Sioux Falls, SD? Great weather for outdoor activities.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 55° | 65° | 1.09" | — |
| 2024 | 72° | 56° | 64° | 0.28" | — |
| 2023 | 73° | 46° | 60° | — | — |
| 2022 | 75° | 45° | 60° | — | — |
| 2021 | 79° | 50° | 64° | — | — |
| 2020 | 72° | 40° | 56° | — | — |
| 2019 | 81° | 51° | 66° | — | — |
| 2018 | 77° | 46° | 62° | — | — |
| 2017 | 80° | 58° | 69° | 1.4" | — |
| 2016 | 66° | 33° | 50° | — | — |
| 2015 | 64° | 53° | 59° | — | — |
| 2014coldest | 47° | 29° | 38° | — | — |
| 2013 | 80° | 50° | 65° | — | — |
| 2012 | 73° | 47° | 60° | — | — |
| 2011 | 62° | 39° | 51° | 0.43" | — |
| 2010 | 68° | 37° | 53° | — | — |
| 2009 | 73° | 46° | 60° | — | — |
| 2008 | 70° | 39° | 54° | 0.3" | — |
| 2007 | 65° | 48° | 56° | — | — |
| 2006 | 58° | 46° | 52° | — | — |
| 2005 | 59° | 30° | 45° | — | — |
| 2004 | 59° | 34° | 46° | 0.1" | — |
| 2003 | 63° | 43° | 53° | — | — |
| 2002 | 78° | 54° | 66° | — | — |
| 2001warmest | 92° | 58° | 75° | — | — |
| 2000 | 69° | 40° | 54° | 1.68" | — |
| 1999 | 73° | 57° | 65° | — | — |
| 1998 | 73° | 54° | 63° | 2.24" | — |
| 1997 | 55° | 27° | 41° | — | — |
| 1996 | 78° | 54° | 66° | 0.2" | — |
| 1995 | 79° | 41° | 60° | — | — |
| 1994 | 78° | 49° | 63° | — | — |
| 1993 | 62° | 40° | 51° | — | — |
| 1992 | 81° | 54° | 67° | 3.25" | — |
| 1991 | 81° | 63° | 72° | — | — |
| 1990 | 55° | 45° | 50° | 1.55" | — |
| 1989 | 81° | 44° | 62° | — | — |
| 1988 | 77° | 47° | 62° | — | — |
| 1987 | 86° | 54° | 70° | — | — |
| 1986 | 70° | 53° | 61° | 0.08" | — |
| 1985 | 53° | 47° | 50° | 0.3" | — |
| 1984 | 71° | 52° | 61° | 0.05" | — |
| 1983 | 65° | 29° | 47° | — | — |
| 1982 | 67° | 53° | 60° | 0.08" | — |
| 1981 | 77° | 37° | 57° | — | — |
| 1980 | 70° | 35° | 52° | — | — |
| 1979 | 72° | 36° | 54° | — | — |
| 1978 | 73° | 41° | 57° | — | — |
| 1977 | 82° | 58° | 70° | 0.03" | — |
| 1976 | 81° | 42° | 61° | — | — |
| 1975 | 71° | 32° | 52° | — | — |
| 1974 | 59° | 34° | 46° | — | — |
| 1973 | 78° | 33° | 56° | — | — |
| 1972 | 79° | 42° | 60° | — | — |
| 1971 | 77° | 45° | 61° | — | — |
55 years of data from SIOUX FALLS