Weather on September 14 at Gateway Arch
Gateway Arch National Park
Based on 53 years of data from St. Louis, MO
Planning Your Visit
September 14th in Gateway Arch National Park (via St. Louis, MO) typically brings warm fall weather, with average highs around 83°F and lows near 59°F. Over 53 years of records, the warmest September 14th was in 1991 (82°F average), while the coldest was 1975 (50°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 25% of September 14th dates historically, with the wettest September 14th recording 5.08" of rain. The last decade has been 4.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.1°F warmer on this date compared to 20-30 years ago.
Planning for September 14th in Gateway Arch? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 97°F | 66°F | 0" | -- |
| 2024 | 88°F | 65°F | 0" | 0" |
| 2023 | 82°F | 49°F | 0" | 0" |
| 2022 | 85°F | 49°F | 0" | 0" |
| 2021 | 91°F | 68°F | 1.02" | 0" |
| 2020 | 83°F | 54°F | 0" | 0" |
| 2019 | 85°F | 55°F | 0" | 0" |
| 2018 | 90°F | 64°F | 0" | 0" |
| 2017 | 86°F | -- | 0" | 0" |
| 2016 | 91°F | 70°F | 0" | 0" |
| 2015 | 75°F | 57°F | 0" | 0" |
| 2014 | 66°F | 46°F | 0" | 0" |
| 2013 | 76°F | 54°F | 0" | 0" |
| 2012 | 87°F | 57°F | 0.23" | 0" |
| 2011 | 96°F | 61°F | 1.09" | -- |
| 2010 | 88°F | 62°F | 0" | 0" |
| 2009 | 78°F | 55°F | 0" | 0" |
| 2008 | 88°F | 65°F | 5.08" | 0" |
| 2007 | 84°F | 58°F | 0" | 0" |
| 2006 | 70°F | 51°F | 0" | 0" |
| 2005 | 92°F | 63°F | 1.91" | 0" |
| 2004 | 85°F | 65°F | 0" | 0" |
| 2003 | 75°F | 63°F | 0.1" | 0" |
| 2002 | 82°F | 57°F | 0" | 0" |
| 2001 | 84°F | 56°F | 0" | 0" |
| 2000 | 81°F | 58°F | 0" | 0" |
| 1999 | 75°F | 46°F | 0" | 0" |
| 1998 | 84°F | 69°F | 0.2" | 0" |
| 1997 | 80°F | 63°F | 0" | 0" |
| 1996 | 71°F | 44°F | 0" | 0" |
| 1995 | 85°F | 63°F | 0" | 0" |
| 1994 | 92°F | 64°F | 0" | 0" |
| 1993 | 82°F | 55°F | 4.32" | 0" |
| 1992 | 88°F | 56°F | 0" | 0" |
| 1991 | 94°F | 71°F | 0" | 0" |
| 1990 | 85°F | 54°F | 0" | 0" |
| 1989 | 71°F | 52°F | -- | 0" |
| 1988 | 86°F | 58°F | 0" | 0" |
| 1987 | 91°F | 72°F | 0" | 0" |
| 1986 | 84°F | 56°F | 0" | 0" |
| 1985 | 77°F | 54°F | 0" | 0" |
| 1982 | 83°F | 66°F | 1.4" | 0" |
| 1981 | 85°F | 69°F | 1.02" | 0" |
| 1980 | 94°F | 68°F | 0" | 0" |
| 1979 | 78°F | 55°F | 0" | 0" |
| 1978 | 89°F | 70°F | 0.1" | 0" |
| 1977 | 71°F | 59°F | 1.47" | 0" |
| 1976 | 89°F | 55°F | 0" | 0" |
| 1975 | 59°F | 41°F | 0" | 0" |
| 1974 | 61°F | 44°F | 0" | 0" |
| 1973 | 81°F | 62°F | 0" | 0" |
| 1972 | 92°F | 68°F | 1.09" | 0" |
| 1971 | 84°F | -- | 0" | 0" |