Weather on May 9
Sioux Falls, SD
55 Years of Data
Avg High
69°F
Avg Low
45°F
Warmest
1987
76°F avg
Coldest
1979
40°F avg
About This Date
May 9th in Sioux Falls, SD typically brings mild spring weather, with average highs around 69°F and lows near 45°F. Over 55 years of records, the warmest May 9th was in 1987 (76°F average), while the coldest was 1979 (40°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 33% of May 9th dates historically, with the wettest May 9th recording 4.93" of rain. The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
Planning for May 9th in Sioux Falls, SD? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 53° | 70° | — | — |
| 2024 | 70° | 48° | 59° | 0.05" | — |
| 2023 | 81° | 52° | 66° | — | — |
| 2022 | 81° | 54° | 67° | — | — |
| 2021 | 61° | 41° | 51° | — | — |
| 2020 | 61° | 37° | 49° | 0.03" | — |
| 2019 | 55° | 38° | 46° | — | — |
| 2018 | 76° | 52° | 64° | — | — |
| 2017 | 71° | 48° | 60° | — | — |
| 2016 | 70° | 53° | 61° | 0.43" | — |
| 2015 | 65° | 33° | 49° | — | — |
| 2014 | 64° | 39° | 52° | — | — |
| 2013 | 64° | 48° | 56° | 0.08" | — |
| 2012 | 66° | 40° | 53° | — | — |
| 2011 | 81° | 59° | 70° | 0.18" | — |
| 2010 | 56° | 28° | 42° | — | — |
| 2009 | 63° | 37° | 50° | — | — |
| 2008 | 59° | 44° | 52° | 0.46" | — |
| 2007 | 79° | 45° | 62° | — | — |
| 2006 | 72° | 41° | 56° | — | — |
| 2005 | 61° | 54° | 57° | — | — |
| 2004 | 89° | 61° | 75° | 0.03" | — |
| 2003 | 60° | 44° | 52° | 0.23" | — |
| 2002 | 55° | 35° | 45° | — | — |
| 2001 | 86° | 53° | 70° | — | — |
| 2000 | 65° | 43° | 54° | — | — |
| 1999 | 72° | 34° | 53° | — | — |
| 1998 | 72° | 49° | 60° | — | — |
| 1997 | 63° | 30° | 46° | — | — |
| 1996 | 57° | 40° | 48° | 1.27" | — |
| 1995 | 57° | 46° | 52° | 2.44" | — |
| 1994 | 72° | 40° | 56° | — | — |
| 1993 | 62° | 52° | 57° | 0.03" | — |
| 1992 | 87° | 59° | 73° | 0.15" | — |
| 1991 | 77° | 54° | 65° | — | — |
| 1990 | 54° | 39° | 46° | 0.38" | — |
| 1989 | 71° | 38° | 54° | — | — |
| 1988 | 71° | 47° | 59° | 0.05" | — |
| 1987warmest | 91° | 61° | 76° | — | — |
| 1986 | 76° | 60° | 68° | 0.25" | — |
| 1985 | 89° | 61° | 75° | — | — |
| 1984 | 61° | 32° | 46° | — | — |
| 1983 | 71° | 44° | 58° | — | — |
| 1982 | 79° | 56° | 67° | 0.03" | — |
| 1981 | 54° | 36° | 45° | — | — |
| 1980 | 67° | 31° | 49° | — | — |
| 1979coldest | 43° | 38° | 40° | 4.93" | — |
| 1978 | 66° | 42° | 54° | — | — |
| 1977 | 74° | 51° | 62° | — | — |
| 1976 | 78° | 47° | 62° | — | — |
| 1975 | 71° | 42° | 57° | — | — |
| 1974 | 71° | 45° | 58° | — | — |
| 1973 | 70° | 52° | 61° | 0.03" | — |
| 1972 | 62° | 41° | 52° | — | — |
| 1971 | 73° | 43° | 58° | — | — |
55 years of data from SIOUX FALLS