Weather on September 19
Saint Louis, MO
55 Years of Data
About This Date
September 19th in Saint Louis, MO typically brings warm fall weather, with average highs around 82°F and lows near 57°F — a 25°F daily swing. Over 53 years of records, the warmest September 19th was in 1972 (89°F average), while the coldest was 1991 (49°F) — a 40°F range across recorded history. Rain or other precipitation has occurred on about 32% of September 19th dates historically, with the wettest September 19th recording 3.96" of rain. The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
Planning for September 19th in Saint Louis, MO? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 85° | 64° | 74° | 0.08" | — |
| 2024 | 91° | 58° | 74° | — | — |
| 2023 | 86° | 54° | 70° | — | — |
| 2022 | 96° | 70° | 83° | — | — |
| 2021 | 87° | 63° | 75° | 0.51" | — |
| 2020 | 73° | 44° | 59° | — | — |
| 2019 | 91° | 62° | 77° | — | — |
| 2018 | 92° | 71° | 81° | 0.13" | — |
| 2017 | 92° | 65° | 78° | 0.03" | — |
| 2016 | 88° | 57° | 72° | — | — |
| 2015 | 92° | 64° | 78° | 0.08" | — |
| 2014 | 75° | 56° | 65° | — | — |
| 2013 | 89° | 73° | 81° | 0.86" | — |
| 2012 | 69° | 48° | 59° | — | — |
| 2011 | 65° | 59° | 62° | 2.82" | — |
| 2010 | 90° | 62° | 76° | 1.42" | — |
| 2009 | 79° | 57° | 68° | — | — |
| 2008 | 81° | 58° | 69° | — | — |
| 2007 | 89° | 62° | 76° | — | — |
| 2006 | 74° | 48° | 61° | — | — |
| 2005 | 80° | 61° | 70° | — | — |
| 2004 | 81° | 54° | 67° | — | — |
| 2003 | 85° | 54° | 69° | — | — |
| 2002 | 82° | 68° | 75° | — | — |
| 2001 | 72° | 64° | 68° | 3.96" | — |
| 2000 | 86° | 53° | 70° | — | — |
| 1999 | 79° | 53° | 66° | 0.05" | — |
| 1998 | 82° | 64° | 73° | — | — |
| 1997 | 85° | 64° | 74° | — | — |
| 1996 | 72° | 50° | 61° | — | — |
| 1995 | 74° | 53° | 63° | 0.38" | — |
| 1994 | 82° | 51° | 67° | — | — |
| 1993 | 76° | 56° | 66° | 0.18" | — |
| 1992 | 75° | 51° | 63° | — | — |
| 1991coldest | 59° | 39° | 49° | — | — |
| 1990 | 73° | 58° | 65° | 0.2" | — |
| 1989 | 82° | 48° | 65° | — | — |
| 1988 | 85° | 57° | 71° | 1.88" | — |
| 1987 | 80° | 45° | 62° | — | — |
| 1986 | 90° | 66° | 78° | — | — |
| 1985 | 87° | 54° | 70° | — | — |
| 1982 | 74° | 50° | 62° | — | — |
| 1981 | 67° | 44° | 55° | — | — |
| 1980 | 78° | 45° | 61° | — | — |
| 1979 | 88° | 48° | 68° | — | — |
| 1978 | 94° | 69° | 81° | — | — |
| 1977 | 85° | 60° | 72° | 2.9" | — |
| 1976 | 89° | 59° | 74° | — | — |
| 1975 | 83° | 62° | 72° | 1.65" | — |
| 1974 | 85° | 60° | 72° | — | — |
| 1973 | 67° | 41° | 54° | — | — |
| 1972warmest | 100° | 77° | 89° | — | — |
| 1971 | 75° | — | — | 2.51" | — |