Weather on March 15 at Gateway Arch
Gateway Arch National Park
Based on 54 years of data from St. Louis, MO
Planning Your Visit
March 15th in Gateway Arch National Park (via St. Louis, MO) typically brings cool spring weather, with average highs around 59°F and lows near 34°F — a 25°F daily swing. Over 54 years of records, the warmest March 15th was in 2012 (69°F average), while the coldest was 2017 (24°F) — a 45°F range across recorded history. Rain or other precipitation has occurred on about 20% of March 15th dates historically, with the wettest March 15th recording 2.87" of rain. The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
Planning for March 15th in Gateway Arch? Bring layers as temperatures can vary throughout the day.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2026 | 70°F | 35°F | 1.55" | -- |
| 2025 | 65°F | 46°F | 0" | 0" |
| 2024 | 63°F | 39°F | 0" | 0" |
| 2023 | 57°F | 24°F | 0" | 0" |
| 2022 | 70°F | 37°F | 0" | 0" |
| 2021 | 53°F | 44°F | 0.97" | 0" |
| 2020 | 41°F | 35°F | 0" | 0" |
| 2019 | 50°F | 37°F | 0" | 0" |
| 2018 | 70°F | -- | 0" | 0" |
| 2017 | 33°F | 16°F | 0" | 0" |
| 2016 | 67°F | 56°F | 0" | 0" |
| 2015 | 66°F | 39°F | 0" | 0" |
| 2014 | 69°F | 38°F | 0" | 0" |
| 2013 | 71°F | 28°F | 0" | 0" |
| 2012 | 85°F | 54°F | 0" | -- |
| 2011 | 40°F | 32°F | 0.81" | 0" |
| 2010 | 48°F | 44°F | 0" | 0" |
| 2009 | 57°F | 33°F | 0" | 0" |
| 2008 | 61°F | 46°F | 0" | 0" |
| 2007 | 71°F | 41°F | 2.87" | 0" |
| 2006 | 52°F | 29°F | 0" | 0" |
| 2005 | 50°F | 27°F | 0" | 0" |
| 2004 | 58°F | 30°F | 0" | 0" |
| 2003 | 46°F | 35°F | 0" | 0" |
| 2002 | 74°F | 43°F | 0.33" | 0" |
| 2001 | 62°F | 40°F | 0.61" | 0" |
| 2000 | 58°F | 39°F | 0" | 0" |
| 1999 | 47°F | 25°F | 0" | 0" |
| 1998 | 41°F | 25°F | 0" | 0" |
| 1997 | 36°F | 22°F | 0" | 0" |
| 1996 | 68°F | 37°F | 0" | 0" |
| 1995 | 76°F | 46°F | 0" | 0" |
| 1994 | 72°F | 38°F | 0" | 0" |
| 1993 | 59°F | 22°F | 0" | 0" |
| 1992 | 42°F | 28°F | 0" | 0" |
| 1991 | 40°F | 30°F | 0" | 0" |
| 1990 | 66°F | 35°F | 0.51" | 0" |
| 1989 | 67°F | 22°F | 0" | 0" |
| 1988 | 39°F | 14°F | 0" | 0" |
| 1987 | 66°F | 42°F | 0.23" | 0" |
| 1986 | 57°F | 29°F | 0" | 0" |
| 1985 | 56°F | 33°F | 0" | 0" |
| 1984 | 74°F | 39°F | 1.02" | 0" |
| 1983 | 62°F | 36°F | 0" | 0" |
| 1980 | 54°F | 24°F | 0" | 0" |
| 1979 | 55°F | 20°F | 0" | 0" |
| 1978 | 38°F | 35°F | 0" | -- |
| 1977 | 81°F | 33°F | 0" | 0" |
| 1976 | 61°F | 37°F | 0" | 0" |
| 1975 | 50°F | 28°F | 0" | 0" |
| 1974 | 56°F | 32°F | 0.1" | 0" |
| 1973 | 70°F | 44°F | 0" | 0" |
| 1972 | 63°F | 44°F | 0" | -- |
| 1971 | 81°F | -- | 2.49" | -- |