Weather on August 31
Saint Louis, MO
55 Years of Data
Avg High
85°F
Avg Low
65°F
Warmest
2013
90°F avg
Coldest
1987
61°F avg
About This Date
August 31st in Saint Louis, MO typically brings warm summer weather, with average highs around 85°F and lows near 65°F. Over 52 years of records, the warmest August 31st was in 2013 (90°F average), while the coldest was 1987 (61°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 2.62" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 31st in Saint Louis, MO? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 58° | 70° | — | — |
| 2024 | 85° | 68° | 76° | 0.03" | — |
| 2023 | 81° | 54° | 67° | — | — |
| 2022 | 86° | 57° | 72° | — | — |
| 2021 | 85° | 67° | 76° | 0.97" | — |
| 2020 | 82° | 64° | 73° | — | — |
| 2019 | 84° | 65° | 74° | 0.15" | — |
| 2018 | 88° | 68° | 78° | — | — |
| 2017 | 82° | 69° | 76° | — | — |
| 2016 | 92° | 70° | 81° | 1.19" | — |
| 2015 | 88° | 73° | 80° | — | — |
| 2014 | 87° | 72° | 79° | — | — |
| 2013warmest | 101° | 80° | 90° | — | — |
| 2012 | 96° | 77° | 87° | 0.03" | — |
| 2011 | 90° | 66° | 78° | — | — |
| 2010 | 90° | 72° | 81° | — | — |
| 2009 | 67° | 57° | 62° | — | — |
| 2008 | 87° | 60° | 74° | — | — |
| 2007 | 86° | 60° | 73° | — | — |
| 2006 | 72° | 63° | 67° | — | — |
| 2005 | 78° | 63° | 70° | — | — |
| 2004 | 78° | 59° | 69° | — | — |
| 2003 | 81° | 69° | 75° | 2.62" | — |
| 2002 | 84° | 65° | 74° | — | — |
| 2001 | 90° | 68° | 79° | 0.05" | — |
| 2000 | 93° | 73° | 83° | — | — |
| 1999 | 78° | 58° | 68° | — | — |
| 1998 | 90° | 67° | 78° | — | — |
| 1997 | 87° | 67° | 77° | 0.56" | — |
| 1996 | 85° | 61° | 73° | — | — |
| 1995 | 93° | 72° | 82° | — | — |
| 1994 | 80° | 68° | 74° | 1.27" | — |
| 1993 | 90° | 68° | 79° | 0.05" | — |
| 1992 | 77° | 60° | 69° | 0.94" | — |
| 1991 | 90° | 69° | 79° | — | — |
| 1990 | 89° | 61° | 75° | — | — |
| 1989 | 90° | 69° | 79° | — | — |
| 1988 | 85° | 54° | 69° | — | — |
| 1987coldest | 76° | 46° | 61° | — | — |
| 1986 | 83° | 57° | 70° | — | — |
| 1985 | 89° | 66° | 78° | — | — |
| 1981 | 91° | 66° | 79° | 0.13" | — |
| 1980 | 95° | 69° | 82° | — | — |
| 1979 | 81° | 70° | 75° | 0.41" | — |
| 1978 | 70° | 56° | 63° | — | — |
| 1977 | 83° | 68° | 75° | — | — |
| 1976 | 84° | 50° | 67° | — | — |
| 1975 | 83° | 65° | 74° | — | — |
| 1974 | 74° | 63° | 68° | 0.03" | — |
| 1973 | 84° | 67° | 75° | — | — |
| 1972 | 92° | 71° | 81° | — | — |
| 1971 | 84° | 51° | 68° | — | — |
52 years of data from ST LOUIS ST LOUIS UNIV