Kingshuk Mondal / CC BY 4.0
St. Louis, MO Weather on August 26
St. Louis hits 100°F on August 26, 1978 in historic heat wave
August 26 in St. Louis has witnessed extreme temperature swings across 52 years of recorded data. The city reached a scorching 100°F in 1978, more than a dozen degrees above the typical high of 88°F. Just recently in 2025, the opposite extreme occurred with a record low of 48°F, creating a remarkable 52-degree range between the hottest and coldest August 26 temperatures on record.
What to Expect on August 26
Planning for August 26th in St. Louis, MO? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Frequently Asked Questions
What was the warmest August 26 ever in St. Louis?
The warmest August 26 in St. Louis, MO reached 100°F in 1978. That is 12°F above the long-term average high of 88°F.
What was the coldest August 26 ever in St. Louis?
The coldest August 26 in St. Louis, MO dropped to 48°F in 2025. That is 19°F below the long-term average low of 67°F.
What is the average temperature on August 26 in St. Louis?
On August 26, St. Louis averages a high of 88°F and a low of 67°F based on 52 years of NOAA weather observations from ST LOUIS ST LOUIS UNIV.
How many years of weather data are available for August 26 in St. Louis?
We have 52 years of weather records for August 26 in St. Louis, MO, 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 St. Louis
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 78°F | 48°F | 0" | -- |
| 2024 | 99°F | 70°F | 0" | -- |
| 2023 | 83°F | 72°F | 0.59" | -- |
| 2022 | 90°F | 65°F | 0" | -- |
| 2021 | 93°F | 72°F | 0" | -- |
| 2020 | 89°F | 67°F | 0" | -- |
| 2019 | 85°F | 69°F | 0.07" | -- |
| 2018 | 93°F | 75°F | 0" | -- |
| 2017 | 84°F | 70°F | 0" | -- |
| 2016 | 93°F | 75°F | 0" | -- |
| 2015 | 80°F | 56°F | 0" | -- |
| 2014 | 97°F | 73°F | 0" | -- |
| 2013 | 94°F | 76°F | 0" | -- |
| 2012 | 91°F | 71°F | 0.12" | -- |
| 2011 | 88°F | 62°F | 0" | -- |
| 2010 | 80°F | 57°F | 0" | -- |
| 2009 | 82°F | 59°F | 0" | -- |
| 2008 | 79°F | 65°F | 0" | -- |
| 2007 | 84°F | 63°F | 0" | -- |
| 2006 | 80°F | 72°F | 0.3" | -- |
| 2005 | 77°F | 71°F | 1.71" | -- |
| 2004 | 85°F | 69°F | 1.04" | -- |
| 2003 | 99°F | 74°F | 0" | -- |
| 2002 | 84°F | 66°F | 0" | -- |
| 2001 | 87°F | 69°F | 0.34" | -- |
| 2000 | 87°F | 72°F | 0.15" | -- |
| 1999 | 81°F | 63°F | 0" | -- |
| 1998 | 93°F | 67°F | 0" | -- |
| 1997 | 86°F | 69°F | 0" | -- |
| 1996 | 89°F | 69°F | 0" | -- |
| 1995 | 89°F | 68°F | 0" | -- |
| 1994 | 89°F | 66°F | 0" | -- |
| 1993 | 92°F | 72°F | 0" | -- |
| 1992 | 90°F | 70°F | 0.05" | -- |
| 1991 | 92°F | 71°F | 0" | -- |
| 1990 | 93°F | 72°F | 0" | -- |
| 1989 | 88°F | 72°F | 0.01" | -- |
| 1988 | 89°F | 59°F | 0" | -- |
| 1987 | 96°F | 68°F | 2.45" | -- |
| 1986 | 98°F | 62°F | 0.09" | -- |
| 1985 | 75°F | 51°F | 0.04" | -- |
| 1981 | 90°F | 64°F | 0" | -- |
| 1980 | 94°F | 56°F | 0" | -- |
| 1979 | 81°F | 64°F | 0" | -- |
| 1978 | 100°F | 66°F | 0.37" | -- |
| 1977 | 83°F | 65°F | 0" | -- |
| 1976 | 90°F | 64°F | 0.07" | -- |
| 1975 | 88°F | 66°F | 1.75" | -- |
| 1974 | 89°F | 67°F | 0" | -- |
| 1973 | 96°F | 67°F | 0" | -- |
| 1972 | 84°F | 64°F | 0.02" | -- |
| 1971 | 88°F | 58°F | 0" | -- |
Based on 52 years of data from NOAA station: ST LOUIS ST LOUIS UNIV
How Has August 26 Changed?
Temperatures on this date have remained relatively stable over the past several decades.
Monthly Climate Averages
Historical temperature and precipitation averages for St. Louis, MO, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.