Weather on April 18
Sioux Falls, SD
55 Years of Data
Avg High
61°F
Avg Low
38°F
Warmest
1987
73°F avg
Coldest
2013
29°F avg
About This Date
April 18th in Sioux Falls, SD typically brings mild spring weather, with average highs around 61°F and lows near 38°F. Over 55 years of records, the warmest April 18th was in 1987 (73°F average), while the coldest was 2013 (29°F) — a 44°F range across recorded history. Precipitation has occurred on 38% of recorded April 18th dates, with snow falling 7% of the time (heaviest snowfall: 6.2"). The last decade has been 5.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 5.7°F cooler on this date compared to 20-30 years ago.
Planning for April 18th in Sioux Falls, SD? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 56° | 36° | 46° | — | — |
| 2024 | 52° | 35° | 43° | — | — |
| 2023 | 67° | 31° | 49° | — | — |
| 2022 | 48° | 21° | 35° | — | — |
| 2021 | 68° | 33° | 51° | — | — |
| 2020 | 70° | 37° | 53° | — | — |
| 2019 | 56° | 39° | 47° | — | — |
| 2018 | 36° | 30° | 33° | 1.02" | 6.2" |
| 2017 | 66° | 47° | 56° | 0.2" | — |
| 2016 | 61° | 42° | 51° | 2.31" | — |
| 2015 | 63° | 47° | 55° | 0.25" | — |
| 2014 | 66° | 32° | 49° | — | — |
| 2013coldest | 32° | 26° | 29° | 0.79" | 2.9" |
| 2012 | 63° | 47° | 55° | — | — |
| 2011 | 44° | 33° | 39° | 0.79" | — |
| 2010 | 64° | 32° | 48° | — | — |
| 2009 | 55° | 40° | 47° | 0.53" | — |
| 2008 | 57° | 33° | 45° | — | — |
| 2007 | 66° | 36° | 51° | — | — |
| 2006 | 54° | 41° | 47° | — | — |
| 2005 | 77° | 59° | 68° | 0.36" | — |
| 2004 | 87° | 48° | 68° | 0.36" | — |
| 2003 | 49° | 36° | 42° | 3.61" | — |
| 2002 | 77° | 38° | 57° | — | — |
| 2001 | 67° | 32° | 49° | — | — |
| 2000 | 66° | 40° | 53° | — | — |
| 1999 | 58° | 21° | 39° | — | — |
| 1998 | 53° | 32° | 43° | 0.23" | — |
| 1997 | 64° | 38° | 51° | — | — |
| 1996 | 66° | 36° | 51° | 0.05" | — |
| 1995 | 41° | 34° | 37° | 5.38" | — |
| 1994 | 87° | 45° | 66° | — | — |
| 1993 | 65° | 42° | 53° | — | — |
| 1992 | 55° | 46° | 51° | 0.56" | — |
| 1991 | 51° | 37° | 44° | 0.48" | — |
| 1990 | 55° | 36° | 45° | — | — |
| 1989 | 57° | 33° | 45° | 0.1" | 0.4" |
| 1988 | 51° | 18° | 34° | — | — |
| 1987warmest | 85° | 61° | 73° | — | — |
| 1986 | 57° | 43° | 50° | 0.71" | — |
| 1985 | 92° | 43° | 67° | — | — |
| 1984 | 63° | 30° | 46° | — | — |
| 1983 | 44° | 31° | 37° | — | — |
| 1982 | 71° | 42° | 57° | — | — |
| 1981 | 68° | 38° | 53° | 0.05" | — |
| 1980 | 78° | 42° | 60° | — | — |
| 1979 | 80° | 55° | 68° | — | — |
| 1978 | 37° | 32° | 35° | 0.94" | 0.6" |
| 1977 | 73° | 51° | 62° | — | — |
| 1976 | 53° | 37° | 45° | — | — |
| 1975 | 45° | 34° | 39° | — | — |
| 1974 | 64° | 37° | 51° | — | — |
| 1973 | 76° | 48° | 62° | — | — |
| 1972 | 44° | 37° | 41° | 0.25" | — |
| 1971 | 71° | 55° | 63° | 0.03" | — |
55 years of data from SIOUX FALLS