Weather on December 15 at Gateway Arch
Gateway Arch National Park
Based on 52 years of data from St. Louis, MO
Planning Your Visit
December 15th in Gateway Arch National Park (via St. Louis, MO) typically brings chilly winter weather, with average highs around 46°F and lows near 29°F. Over 52 years of records, the warmest December 15th was in 2021 (63°F average), while the coldest was 1989 (-4°F) — a 67°F range across recorded history. Precipitation has occurred on 37% of recorded December 15th dates, with snow falling 10% of the time (heaviest snowfall: 6"). The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
Planning for December 15th in Gateway Arch? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 44°F | 10°F | 0" | 0" |
| 2024 | 55°F | 44°F | 0" | 0" |
| 2023 | 62°F | 32°F | 0" | 0" |
| 2022 | 38°F | 35°F | 0" | 0" |
| 2021 | 68°F | 57°F | 0" | 0" |
| 2020 | 34°F | 22°F | 0" | 0" |
| 2019 | 29°F | 26°F | 0.2" | -- |
| 2018 | 49°F | 35°F | 1.3" | 0" |
| 2017 | 32°F | 26°F | 0" | 0" |
| 2016 | 31°F | 14°F | 0" | 0" |
| 2015 | 52°F | 44°F | 0" | 0" |
| 2014 | 62°F | 47°F | 0.76" | 0" |
| 2013 | 34°F | 23°F | 0" | 0" |
| 2012 | 55°F | 43°F | 1.4" | -- |
| 2011 | 62°F | 49°F | 1.57" | -- |
| 2010 | 23°F | 9°F | 0" | 0" |
| 2009 | 54°F | 20°F | 0" | 0" |
| 2008 | 59°F | 13°F | 0.84" | 0.2" |
| 2007 | 38°F | 24°F | 0.64" | 1.2" |
| 2006 | 67°F | 34°F | 0" | 0" |
| 2005 | 47°F | 27°F | 0" | 0" |
| 2004 | 31°F | 14°F | 0" | 0" |
| 2003 | 37°F | 27°F | 0" | 0" |
| 2002 | 53°F | 33°F | 0" | 0" |
| 2001 | 43°F | 36°F | 0" | 0" |
| 2000 | 24°F | 11°F | 0" | 0" |
| 1999 | 44°F | 34°F | 0" | 0" |
| 1998 | 53°F | 24°F | 0" | 0" |
| 1997 | 43°F | 23°F | 0" | 0" |
| 1996 | 54°F | 38°F | 0.51" | 0" |
| 1995 | 46°F | 36°F | 0.13" | 0" |
| 1994 | 54°F | 33°F | 0" | 0" |
| 1993 | 48°F | 42°F | 0.15" | 0" |
| 1992 | 56°F | 44°F | 5.08" | 0" |
| 1991 | 41°F | 24°F | 0" | 0" |
| 1990 | 52°F | 34°F | 0.61" | 0" |
| 1989 | 7°F | -15°F | 1.27" | 6" |
| 1988 | 58°F | 25°F | 0" | 0" |
| 1987 | 28°F | 22°F | 0.76" | 0.7" |
| 1986 | 51°F | 36°F | 0" | 0" |
| 1982 | 45°F | 30°F | 0" | 0" |
| 1981 | 41°F | 25°F | 0" | -- |
| 1980 | 48°F | 37°F | 0" | 0" |
| 1979 | 38°F | 19°F | 0" | 0" |
| 1978 | 45°F | 28°F | 0" | 0" |
| 1977 | 40°F | 32°F | 0" | 0" |
| 1976 | 52°F | 22°F | 0" | 0" |
| 1975 | 68°F | 28°F | 2.41" | 0" |
| 1974 | 51°F | 25°F | 0.18" | 0" |
| 1973 | 35°F | 29°F | 0.51" | 2" |
| 1972 | 28°F | 18°F | 0.23" | 0" |
| 1971 | 63°F | 42°F | 2.41" | 0" |