Weather on May 12 at Gateway Arch
Gateway Arch National Park
Based on 53 years of data from St. Louis, MO
Planning Your Visit
May 12th in Gateway Arch National Park (via St. Louis, MO) typically brings pleasant spring weather, with average highs around 76°F and lows near 55°F. Over 53 years of records, the warmest May 12th was in 2022 (82°F average), while the coldest was 2008 (47°F) — a 35°F range across recorded history. Rain or other precipitation has occurred on about 43% of May 12th dates historically, with the wettest May 12th recording 3.68" of rain. The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
Planning for May 12th in Gateway Arch? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 73°F | 58°F | 0.94" | 0" |
| 2024 | 84°F | 50°F | 0" | 0" |
| 2023 | 82°F | 65°F | 0" | 0" |
| 2022 | 94°F | 70°F | 0" | 0" |
| 2021 | 66°F | 43°F | 0" | 0" |
| 2020 | 55°F | 44°F | 0" | 0" |
| 2019 | 58°F | 47°F | 0.05" | 0" |
| 2018 | 89°F | 73°F | 0" | 0" |
| 2017 | 75°F | 58°F | 0.05" | 0" |
| 2016 | 82°F | 59°F | 3.68" | 0" |
| 2015 | 73°F | 50°F | 0" | 0" |
| 2014 | 87°F | 73°F | 0" | 0" |
| 2013 | 71°F | 42°F | 0" | -- |
| 2012 | 74°F | 56°F | 0" | -- |
| 2011 | 91°F | 68°F | 0" | 0" |
| 2010 | 82°F | 57°F | 3.33" | 0" |
| 2009 | 71°F | 46°F | 0" | 0" |
| 2008 | 56°F | 39°F | 0.03" | 0" |
| 2007 | 79°F | 61°F | 0.08" | 0" |
| 2006 | 60°F | 48°F | 0.08" | 0" |
| 2005 | 86°F | 59°F | 0" | 0" |
| 2004 | 83°F | 66°F | 0" | 0" |
| 2003 | 65°F | 52°F | 0" | 0" |
| 2002 | 78°F | 58°F | 0" | 0" |
| 2001 | 79°F | 58°F | 0" | 0" |
| 2000 | 85°F | 64°F | 0" | 0" |
| 1999 | 81°F | 64°F | 0.05" | 0" |
| 1998 | 77°F | 59°F | 0.1" | 0" |
| 1997 | 80°F | 50°F | 0.33" | 0" |
| 1996 | 62°F | 48°F | 0" | 0" |
| 1995 | 70°F | 54°F | 0.1" | 0" |
| 1994 | 82°F | 56°F | 1.24" | 0" |
| 1993 | 68°F | 57°F | 0.58" | 0" |
| 1992 | 82°F | 60°F | 0.46" | 0" |
| 1991 | 81°F | 63°F | 0.03" | 0" |
| 1990 | 74°F | 50°F | 3.38" | 0" |
| 1989 | 75°F | 41°F | 0" | 0" |
| 1988 | 88°F | 49°F | 0" | 0" |
| 1987 | 78°F | 56°F | 0.48" | 0" |
| 1986 | 83°F | 62°F | 0" | 0" |
| 1985 | 88°F | 60°F | 0" | 0" |
| 1984 | 81°F | 56°F | 0" | 0" |
| 1981 | 64°F | 38°F | 0" | 0" |
| 1980 | 74°F | 58°F | -- | -- |
| 1979 | 68°F | 47°F | 0.41" | 0" |
| 1978 | 68°F | -- | 1.78" | 0" |
| 1977 | 72°F | 40°F | 0" | 0" |
| 1976 | 78°F | 44°F | 0" | 0" |
| 1975 | 76°F | 54°F | 1.93" | 0" |
| 1974 | 71°F | 53°F | 0.94" | 0" |
| 1973 | 65°F | 54°F | 0" | 0" |
| 1972 | 78°F | 59°F | 0" | 0" |
| 1971 | 74°F | 48°F | 1.07" | 0" |