Weather on September 27
Saint Louis, MO
55 Years of Data
Avg High
79°F
Avg Low
54°F
Warmest
1986
80°F avg
Coldest
1975
52°F avg
About This Date
September 27th in Saint Louis, MO typically brings pleasant fall weather, with average highs around 79°F and lows near 54°F — a 25°F daily swing. Over 53 years of records, the warmest September 27th was in 1986 (80°F average), while the coldest was 1975 (52°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 26% of September 27th dates historically, with the wettest September 27th recording 4.24" of rain. The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
Planning for September 27th in Saint Louis, MO? Great weather for outdoor activities.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 85° | 51° | 68° | — | — |
| 2024 | 70° | 63° | 66° | 4.24" | — |
| 2023 | 82° | 65° | 73° | 2.29" | — |
| 2022 | 73° | 45° | 59° | — | — |
| 2021 | 90° | 58° | 74° | — | — |
| 2020 | 84° | 54° | 69° | 0.79" | — |
| 2019 | 91° | 58° | 74° | — | — |
| 2018 | 73° | 50° | 62° | — | — |
| 2017 | 91° | — | — | — | — |
| 2016 | 81° | 49° | 65° | — | — |
| 2015 | 74° | 67° | 70° | — | — |
| 2014 | 84° | 63° | 73° | — | — |
| 2013 | 85° | 64° | 74° | — | — |
| 2012 | 79° | 64° | 71° | 0.03" | — |
| 2011 | 71° | 47° | 59° | — | — |
| 2010 | 80° | 48° | 64° | 0.05" | — |
| 2009 | 69° | 53° | 61° | 0.48" | — |
| 2008 | 79° | 50° | 64° | — | — |
| 2007 | 70° | 62° | 66° | — | — |
| 2006 | 80° | 54° | 67° | — | — |
| 2005 | 77° | 54° | 65° | — | — |
| 2004 | 78° | 47° | 62° | — | — |
| 2003 | 84° | 53° | 69° | 3.89" | — |
| 2002 | 74° | 55° | 64° | — | — |
| 2001 | 70° | 41° | 55° | — | — |
| 2000 | 67° | 43° | 55° | — | — |
| 1999 | 88° | 60° | 74° | — | — |
| 1998 | 90° | 69° | 79° | — | — |
| 1997 | 80° | 51° | 66° | — | — |
| 1996 | 69° | 53° | 61° | 2.34" | — |
| 1995 | 78° | 46° | 62° | — | — |
| 1994 | 66° | 53° | 60° | — | — |
| 1993 | 67° | 43° | 55° | — | — |
| 1992 | 76° | 49° | 62° | 0.84" | — |
| 1991 | 72° | 48° | 60° | — | — |
| 1990 | 89° | 67° | 78° | — | — |
| 1989 | 70° | 36° | 53° | — | — |
| 1988 | 84° | 54° | 69° | — | — |
| 1987 | 85° | 54° | 69° | — | — |
| 1986warmest | 88° | 72° | 80° | 3.48" | — |
| 1985 | 70° | 41° | 55° | — | — |
| 1982 | 84° | 47° | 65° | — | — |
| 1981 | 78° | 60° | 69° | 1.78" | — |
| 1980 | 75° | 47° | 61° | — | — |
| 1979 | 86° | 49° | 67° | — | — |
| 1978 | 79° | 50° | 64° | — | — |
| 1977 | 84° | 61° | 72° | 1.22" | — |
| 1976 | 78° | 56° | 67° | 1.19" | — |
| 1975coldest | 69° | 36° | 52° | — | — |
| 1974 | 78° | 46° | 62° | — | — |
| 1973 | 85° | 68° | 76° | — | — |
| 1972 | 82° | 63° | 72° | 0.66" | — |
| 1971 | 91° | — | — | — | — |
53 years of data from ST LOUIS ST LOUIS UNIV