Weather on October 15
Sioux Falls, SD
55 Years of Data
About This Date
October 15th in Sioux Falls, SD typically brings cool fall weather, with average highs around 58°F and lows near 35°F. Over 55 years of records, the warmest October 15th was in 1998 (58°F average), while the coldest was 1992 (34°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 22% of October 15th dates historically, with the wettest October 15th recording 3.78" of rain. The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
Planning for October 15th in Sioux Falls, SD? Bring layers as temperatures can vary throughout the day.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 61° | 48° | 54° | 0.05" | — |
| 2024 | 56° | 27° | 42° | — | — |
| 2023 | 58° | 41° | 49° | — | — |
| 2022 | 67° | 27° | 47° | — | — |
| 2021 | 58° | 37° | 47° | — | — |
| 2020 | 54° | 29° | 42° | — | — |
| 2019 | 47° | 38° | 42° | — | — |
| 2018 | 46° | 26° | 36° | — | — |
| 2017 | 60° | 34° | 47° | — | — |
| 2016 | 69° | 45° | 57° | — | — |
| 2015 | 61° | 37° | 49° | — | — |
| 2014 | 67° | 31° | 49° | — | — |
| 2013 | 53° | 42° | 48° | 0.2" | — |
| 2012 | 73° | 31° | 52° | — | — |
| 2011 | 65° | 34° | 49° | — | — |
| 2010 | 67° | 32° | 49° | — | — |
| 2009 | 45° | 38° | 41° | 0.18" | — |
| 2008 | 55° | 31° | 43° | — | — |
| 2007 | 52° | 47° | 49° | 3.78" | — |
| 2006 | 65° | 31° | 48° | 0.23" | — |
| 2005 | 68° | 34° | 51° | — | — |
| 2004 | 45° | 33° | 39° | — | — |
| 2003 | 56° | 31° | 43° | — | — |
| 2002 | 52° | 31° | 41° | — | — |
| 2001 | 51° | 31° | 41° | — | — |
| 2000 | 58° | 33° | 45° | — | — |
| 1999 | 64° | 42° | 53° | — | — |
| 1998warmest | 69° | 46° | 58° | 0.13" | — |
| 1997 | 63° | 40° | 51° | 0.05" | — |
| 1996 | 70° | 36° | 53° | — | — |
| 1995 | 62° | 34° | 48° | — | — |
| 1994 | 58° | 53° | 55° | 0.74" | — |
| 1993 | 57° | 48° | 53° | 0.3" | — |
| 1992coldest | 41° | 27° | 34° | — | — |
| 1991 | 58° | 25° | 41° | — | — |
| 1990 | 60° | 32° | 46° | — | — |
| 1989 | 65° | 41° | 53° | 0.08" | — |
| 1988 | 72° | 40° | 56° | — | — |
| 1987 | 50° | 39° | 45° | — | — |
| 1986 | 49° | 28° | 38° | — | — |
| 1985 | 57° | 31° | 44° | — | — |
| 1984 | 53° | 39° | 46° | 2.01" | — |
| 1983 | 65° | 41° | 53° | 0.33" | — |
| 1982 | 60° | 39° | 50° | — | — |
| 1981 | 63° | 37° | 50° | — | — |
| 1980 | 51° | 42° | 47° | — | — |
| 1979 | 69° | 36° | 52° | — | — |
| 1978 | 56° | 34° | 45° | — | — |
| 1977 | 53° | 32° | 43° | — | — |
| 1976 | 48° | 25° | 36° | — | — |
| 1975 | 59° | 32° | 46° | — | — |
| 1974 | 64° | 23° | 44° | — | — |
| 1973 | 62° | 37° | 50° | — | — |
| 1972 | 48° | 23° | 36° | — | — |
| 1971 | 61° | 37° | 49° | — | — |
Sioux Falls, SD Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Sioux Falls, SD Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Sioux Falls, SD Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Sioux Falls, SD
Sioux Falls, SD has no months that meet our "pleasant" threshold — every season has tradeoffs.