Weather on August 31
Sioux Falls, SD
55 Years of Data
About This Date
August 31st in Sioux Falls, SD typically brings warm summer weather, with average highs around 81°F and lows near 58°F. Over 55 years of records, the warmest August 31st was in 1990 (81°F average), while the coldest was 1974 (52°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 27% of August 31st dates historically, with the wettest August 31st recording 10.13" of rain. The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
Planning for August 31st in Sioux Falls, SD? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 62° | 70° | — | — |
| 2024 | 87° | 56° | 71° | — | — |
| 2023 | 86° | 66° | 76° | — | — |
| 2022 | 91° | 56° | 73° | — | — |
| 2021 | 80° | 62° | 71° | 1.09" | — |
| 2020 | 77° | 53° | 65° | 0.33" | — |
| 2019 | 66° | 59° | 63° | 0.28" | — |
| 2018 | 82° | 68° | 75° | 0.03" | — |
| 2017 | 79° | 58° | 68° | — | — |
| 2016 | 84° | 54° | 69° | — | — |
| 2015 | 83° | 64° | 73° | — | — |
| 2014 | 82° | 61° | 71° | — | — |
| 2013 | 89° | 61° | 75° | 1.5" | — |
| 2012 | 86° | 61° | 73° | — | — |
| 2011 | 85° | 67° | 76° | — | — |
| 2010 | 77° | 59° | 68° | 3.1" | — |
| 2009 | 70° | 42° | 56° | — | — |
| 2008 | 87° | 69° | 78° | — | — |
| 2007 | 81° | 59° | 70° | — | — |
| 2006 | 76° | 61° | 68° | — | — |
| 2005 | 77° | 50° | 64° | — | — |
| 2004 | 84° | 62° | 73° | 2.08" | — |
| 2003 | 72° | 47° | 59° | — | — |
| 2002 | 85° | 68° | 76° | — | — |
| 2001 | 75° | 51° | 63° | — | — |
| 2000 | 82° | 58° | 70° | — | — |
| 1999 | 87° | 65° | 76° | — | — |
| 1998 | 72° | 54° | 63° | 0.08" | — |
| 1997 | 83° | 55° | 69° | — | — |
| 1996 | 83° | 65° | 74° | — | — |
| 1995 | 76° | 57° | 66° | — | — |
| 1994 | 68° | 50° | 59° | — | — |
| 1993 | 71° | 48° | 60° | — | — |
| 1992 | 74° | 45° | 59° | 0.1" | — |
| 1991 | 85° | 54° | 69° | — | — |
| 1990warmest | 93° | 68° | 81° | — | — |
| 1989 | 90° | 65° | 77° | — | — |
| 1988 | 89° | 62° | 76° | — | — |
| 1987 | 75° | 41° | 58° | — | — |
| 1986 | 83° | 62° | 72° | — | — |
| 1985 | 82° | 64° | 73° | — | — |
| 1984 | 85° | 51° | 68° | — | — |
| 1983 | 85° | 62° | 73° | — | — |
| 1982 | 84° | 63° | 73° | 10.13" | — |
| 1981 | 78° | 54° | 66° | — | — |
| 1980 | 64° | 55° | 60° | 1.68" | — |
| 1979 | 89° | 68° | 79° | 0.03" | — |
| 1978 | 83° | 60° | 71° | — | — |
| 1977 | 76° | 54° | 65° | — | — |
| 1976 | 81° | 58° | 69° | 0.08" | — |
| 1975 | 85° | 65° | 75° | 0.05" | — |
| 1974coldest | 63° | 41° | 52° | — | — |
| 1973 | 87° | 72° | 79° | — | — |
| 1972 | 72° | 50° | 61° | 0.08" | — |
| 1971 | 87° | 68° | 78° | — | — |
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.