Weather on September 29 at Gateway Arch
Gateway Arch National Park
Based on 52 years of data from St. Louis, MO
Planning Your Visit
September 29th in Gateway Arch National Park (via St. Louis, MO) typically brings pleasant fall weather, with average highs around 78°F and lows near 53°F — a 25°F daily swing. Over 52 years of records, the warmest September 29th was in 2019 (81°F average), while the coldest was 2003 (52°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 21% of September 29th dates historically, with the wettest September 29th recording 3.76" of rain. The last decade has been 5.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.3°F warmer on this date compared to 20-30 years ago.
Planning for September 29th in Gateway Arch? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 90°F | 54°F | 0" | 0" |
| 2024 | 80°F | 69°F | 0" | 0" |
| 2023 | 89°F | 62°F | 0" | 0" |
| 2022 | 70°F | 39°F | 0" | 0" |
| 2021 | 88°F | 56°F | 0" | 0" |
| 2020 | 64°F | 47°F | 0" | 0" |
| 2019 | 92°F | 70°F | 0" | -- |
| 2018 | 75°F | 51°F | 0" | 0" |
| 2017 | 74°F | -- | 0" | 0" |
| 2016 | 68°F | 54°F | 0" | 0" |
| 2015 | 83°F | 69°F | 0.03" | 0" |
| 2014 | 85°F | 60°F | 0" | 0" |
| 2013 | 85°F | 60°F | 0.1" | 0" |
| 2012 | 72°F | 51°F | 0.64" | 0" |
| 2011 | 74°F | 56°F | 0" | -- |
| 2010 | 76°F | 51°F | 0" | 0" |
| 2009 | 68°F | 50°F | 0" | 0" |
| 2008 | 83°F | 58°F | 0" | 0" |
| 2007 | 84°F | 50°F | 0" | 0" |
| 2006 | 65°F | 44°F | 0" | 0" |
| 2005 | 80°F | 48°F | 3.76" | 0" |
| 2004 | 73°F | 45°F | 0" | 0" |
| 2003 | 63°F | 42°F | 0" | 0" |
| 2002 | 82°F | 58°F | 0" | 0" |
| 2001 | 65°F | 44°F | 0" | 0" |
| 2000 | 73°F | 46°F | 0" | 0" |
| 1999 | 82°F | 54°F | 1.32" | 0" |
| 1998 | 84°F | 64°F | 0.03" | 0" |
| 1997 | 74°F | 50°F | 0" | 0" |
| 1996 | 75°F | 46°F | 0" | 0" |
| 1995 | 83°F | 53°F | 0" | 0" |
| 1994 | 79°F | 45°F | 0" | 0" |
| 1993 | 70°F | 47°F | 0" | 0" |
| 1992 | 68°F | 41°F | 0" | 0" |
| 1991 | 83°F | 55°F | 0" | 0" |
| 1990 | 84°F | 63°F | 0" | 0" |
| 1989 | 78°F | 56°F | 0" | 0" |
| 1988 | 77°F | 62°F | 0" | 0" |
| 1986 | 88°F | 64°F | 0.18" | 0" |
| 1985 | 77°F | 44°F | 0" | 0" |
| 1982 | 79°F | 55°F | 0" | 0" |
| 1981 | 75°F | 51°F | 0" | 0" |
| 1980 | 79°F | 44°F | 0" | 0" |
| 1979 | 88°F | 54°F | 0" | 0" |
| 1978 | 71°F | 43°F | 0" | 0" |
| 1977 | 76°F | 56°F | 0" | 0" |
| 1976 | 72°F | 48°F | 0" | 0" |
| 1975 | 73°F | 50°F | 0.18" | 0" |
| 1974 | 63°F | 46°F | 3.43" | 0" |
| 1973 | 78°F | 60°F | 0.43" | 0" |
| 1972 | 82°F | 55°F | 1.45" | 0" |
| 1971 | 92°F | -- | 0" | 0" |