Michael D Beckwith / CC BY 2.0
Sioux Falls, SD Weather on August 26
August 26th in Sioux Falls, SD typically brings warm summer weather, with average highs around 82°F and lows near 60°F. Over 55 years of records, the warmest August 26th was in 1973 (87°F average), while the coldest was 1992 (55°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 38% of August 26th dates historically, with the wettest August 26th recording 1.25" of rain. Temperatures on this date have remained relatively stable over the past several decades.
What to Expect on August 26
Planning for August 26th in Sioux Falls, SD? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
August 26 Weather Records for Sioux Falls
- •The all-time record high for August 26th in Sioux Falls, SD is 108°F, set in 1973.
- •The coldest August 26th on record dropped to 44°F in 2025.
- •Temperatures have reached 90°F or higher on August 26th in 11 of the last 55 years.
Frequently Asked Questions
What was the warmest August 26 ever in Sioux Falls?
The warmest August 26 in Sioux Falls, SD reached 108°F in 1973. That is 26°F above the long-term average high of 82°F.
What was the coldest August 26 ever in Sioux Falls?
The coldest August 26 in Sioux Falls, SD dropped to 44°F in 2025. That is 16°F below the long-term average low of 60°F.
What is the average temperature on August 26 in Sioux Falls?
On August 26, Sioux Falls averages a high of 82°F and a low of 60°F based on 55 years of NOAA weather observations from SIOUX FALLS.
How many years of weather data are available for August 26 in Sioux Falls?
We have 55 years of weather records for August 26 in Sioux Falls, SD, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
August 26 Weather History in Sioux Falls
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 76°F | 44°F | 0" | -- |
| 2024 | 92°F | 70°F | 0" | -- |
| 2023 | 78°F | 58°F | 0" | -- |
| 2022 | 82°F | 57°F | 0.01" | -- |
| 2021 | 82°F | 65°F | 0.09" | -- |
| 2020 | 95°F | 73°F | 0" | -- |
| 2019 | 79°F | 61°F | 0.52" | -- |
| 2018 | 87°F | 70°F | 0" | -- |
| 2017 | 82°F | 64°F | 0" | -- |
| 2016 | 75°F | 49°F | 0" | -- |
| 2015 | 77°F | 49°F | 0.01" | -- |
| 2014 | 73°F | 51°F | 0" | -- |
| 2013 | 91°F | 75°F | 0" | -- |
| 2012 | 87°F | 60°F | 0" | -- |
| 2011 | 89°F | 62°F | 0" | -- |
| 2010 | 84°F | 58°F | 0" | -- |
| 2009 | 75°F | 55°F | 0" | -- |
| 2008 | 79°F | 60°F | 0" | -- |
| 2007 | 80°F | 66°F | 0" | -- |
| 2006 | 81°F | 57°F | 0" | -- |
| 2005 | 81°F | 57°F | 0.08" | -- |
| 2004 | 74°F | 57°F | 0.03" | -- |
| 2003 | 92°F | 63°F | 0" | -- |
| 2002 | 83°F | 59°F | 0" | -- |
| 2001 | 89°F | 57°F | 0" | -- |
| 2000 | 85°F | 62°F | 0" | -- |
| 1999 | 91°F | 68°F | 0.02" | -- |
| 1998 | 80°F | 58°F | 0" | -- |
| 1997 | 86°F | 64°F | 0" | -- |
| 1996 | 77°F | 54°F | 0.03" | -- |
| 1995 | 82°F | 68°F | 0" | -- |
| 1994 | 83°F | 68°F | 0" | -- |
| 1993 | 89°F | 68°F | 0.14" | -- |
| 1992 | 62°F | 49°F | 0.01" | -- |
| 1991 | 98°F | 73°F | 0" | -- |
| 1990 | 90°F | 68°F | 0" | -- |
| 1989 | 80°F | 63°F | 0.32" | -- |
| 1988 | 77°F | 47°F | 0.05" | -- |
| 1987 | 63°F | 54°F | 0" | -- |
| 1986 | 70°F | 48°F | 0.21" | -- |
| 1985 | 76°F | 46°F | 0" | -- |
| 1984 | 91°F | 69°F | 0" | -- |
| 1983 | 96°F | 74°F | 0.11" | -- |
| 1982 | 84°F | 59°F | 0" | -- |
| 1981 | 77°F | 58°F | 0.17" | -- |
| 1980 | 64°F | 56°F | 0.21" | -- |
| 1979 | 73°F | 58°F | 1.25" | -- |
| 1978 | 77°F | 65°F | 0.58" | -- |
| 1977 | 87°F | 73°F | 0" | -- |
| 1976 | 100°F | 69°F | 0" | -- |
| 1975 | 75°F | 54°F | 0.19" | -- |
| 1974 | 84°F | 58°F | 0.26" | -- |
| 1973 | 108°F | 67°F | 0" | -- |
| 1972 | 76°F | 52°F | 0.12" | -- |
| 1971 | 80°F | 48°F | 0" | -- |
Based on 55 years of data from NOAA station: SIOUX FALLS
Monthly Climate Averages
Historical temperature and precipitation averages for Sioux Falls, SD, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.