Weather on September 17
Saint Louis, MO
55 Years of Data
Avg High
79°F
Avg Low
58°F
Warmest
1972
81°F avg
Coldest
1996
57°F avg
About This Date
September 17th in Saint Louis, MO typically brings pleasant fall weather, with average highs around 79°F and lows near 58°F. Over 53 years of records, the warmest September 17th was in 1972 (81°F average), while the coldest was 1996 (57°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 26% of September 17th dates historically, with the wettest September 17th recording 4.22" of rain. The last decade has been 8.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 8.0°F warmer on this date compared to 20-30 years ago.
Planning for September 17th in Saint Louis, MO? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 92° | 58° | 75° | — | — |
| 2024 | 90° | 60° | 75° | — | — |
| 2023 | 78° | 52° | 65° | — | — |
| 2022 | 88° | 61° | 74° | — | — |
| 2021 | 89° | 60° | 75° | — | — |
| 2020 | 79° | 55° | 67° | — | — |
| 2019 | 91° | 69° | 80° | — | — |
| 2018 | 93° | 66° | 80° | — | — |
| 2017 | 89° | 69° | 79° | 0.03" | — |
| 2016 | 75° | 68° | 72° | 2.39" | — |
| 2015 | 85° | 68° | 76° | — | — |
| 2014 | 66° | 53° | 60° | — | — |
| 2013 | 74° | 60° | 67° | — | — |
| 2012 | 73° | 64° | 69° | 0.03" | — |
| 2011 | 68° | 53° | 61° | — | — |
| 2010 | 83° | 52° | 67° | — | — |
| 2009 | 83° | 59° | 71° | — | — |
| 2008 | 70° | 51° | 60° | — | — |
| 2007 | 71° | 56° | 63° | — | — |
| 2006 | 87° | 62° | 75° | — | — |
| 2005 | 67° | 53° | 60° | — | — |
| 2004 | 81° | 58° | 69° | — | — |
| 2003 | 83° | 58° | 70° | — | — |
| 2002 | 79° | 65° | 72° | — | — |
| 2001 | 75° | 53° | 64° | — | — |
| 2000 | 69° | 47° | 58° | — | — |
| 1999 | 72° | 45° | 58° | — | — |
| 1998 | 79° | 69° | 74° | 1.09" | — |
| 1997 | 92° | 69° | 80° | 1.65" | — |
| 1996coldest | 65° | 50° | 57° | 0.18" | — |
| 1995 | 81° | 62° | 71° | — | — |
| 1994 | 84° | 61° | 72° | — | — |
| 1993 | 71° | 50° | 61° | — | — |
| 1992 | 86° | 61° | 73° | — | — |
| 1991 | 78° | 58° | 68° | — | — |
| 1990 | 73° | 54° | 63° | — | — |
| 1989 | 79° | 51° | 65° | — | — |
| 1988 | 94° | 59° | 76° | 0.76" | — |
| 1987 | 83° | 58° | 70° | 4.22" | — |
| 1986 | 75° | 63° | 69° | 1.37" | — |
| 1985 | 85° | 61° | 73° | — | — |
| 1982 | 77° | 55° | 66° | — | — |
| 1981 | 70° | 48° | 59° | — | — |
| 1980 | 87° | 54° | 70° | 4.06" | — |
| 1979 | 79° | 42° | 60° | — | — |
| 1978 | 83° | 67° | 75° | 2.69" | — |
| 1977 | 80° | 60° | 70° | — | — |
| 1976 | 73° | 43° | 58° | — | — |
| 1975 | 70° | 61° | 65° | 0.58" | — |
| 1974 | 65° | 59° | 62° | 0.18" | — |
| 1973 | 80° | 58° | 69° | 0.2" | — |
| 1972warmest | 90° | 73° | 81° | — | — |
| 1971 | 68° | — | — | — | — |
53 years of data from ST LOUIS ST LOUIS UNIV