Weather on May 31 at Gateway Arch
Gateway Arch National Park
Based on 52 years of data from St. Louis, MO
Planning Your Visit
May 31st in Gateway Arch National Park (via St. Louis, MO) typically brings warm spring weather, with average highs around 82°F and lows near 61°F. Over 52 years of records, the warmest May 31st was in 2018 (84°F average), while the coldest was 1971 (54°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 35% of May 31st dates historically, with the wettest May 31st recording 5.08" of rain. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
Planning for May 31st in Gateway Arch? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 82°F | 60°F | 0" | 0" |
| 2024 | 82°F | 61°F | -- | 0" |
| 2023 | 90°F | 61°F | 0" | 0" |
| 2022 | 90°F | 70°F | 0" | 0" |
| 2021 | 77°F | 50°F | 0" | 0" |
| 2020 | 81°F | 54°F | 0" | 0" |
| 2019 | 80°F | 61°F | 0" | 0" |
| 2018 | 90°F | 78°F | 0" | 0" |
| 2017 | 83°F | 58°F | 0" | 0" |
| 2016 | 79°F | 67°F | 0.41" | 0" |
| 2015 | 74°F | 53°F | 0.43" | 0" |
| 2014 | 86°F | 69°F | 2.01" | 0" |
| 2013 | 82°F | 64°F | 2.01" | 0" |
| 2012 | 82°F | 60°F | 0" | -- |
| 2011 | 88°F | 69°F | 0" | -- |
| 2010 | 89°F | 67°F | 0" | 0" |
| 2009 | 87°F | 57°F | 0.05" | 0" |
| 2008 | 91°F | 65°F | 3.91" | 0" |
| 2007 | 79°F | 68°F | 0.08" | 0" |
| 2006 | 88°F | 69°F | 0" | 0" |
| 2005 | 76°F | 63°F | 0" | 0" |
| 2004 | 87°F | 60°F | 0.76" | 0" |
| 2003 | 84°F | 60°F | 0.23" | 0" |
| 2002 | 82°F | 66°F | 0" | 0" |
| 2001 | 69°F | 59°F | 2.64" | 0" |
| 2000 | 88°F | 67°F | 0" | 0" |
| 1999 | 77°F | 65°F | 0.23" | 0" |
| 1998 | 87°F | 74°F | 0" | 0" |
| 1997 | 63°F | 59°F | 1.4" | 0" |
| 1996 | 77°F | 47°F | 0" | 0" |
| 1995 | 76°F | 59°F | 0" | 0" |
| 1994 | 84°F | 64°F | 0" | 0" |
| 1993 | 80°F | 56°F | 0.1" | 0" |
| 1992 | 80°F | 54°F | 0" | 0" |
| 1991 | 88°F | 70°F | 0" | 0" |
| 1990 | 77°F | 63°F | 0" | 0" |
| 1989 | 91°F | 68°F | 0" | 0" |
| 1988 | 92°F | 56°F | 0" | 0" |
| 1987 | 91°F | 61°F | 0" | 0" |
| 1986 | 86°F | 65°F | 0" | 0" |
| 1985 | 89°F | 55°F | 0" | 0" |
| 1984 | 79°F | 54°F | 0" | 0" |
| 1980 | 88°F | 67°F | -- | -- |
| 1979 | 79°F | 62°F | 0" | 0" |
| 1978 | -- | 60°F | 0" | 0" |
| 1977 | 83°F | 62°F | 0.41" | 0" |
| 1976 | 81°F | 63°F | 1.7" | 0" |
| 1975 | 76°F | 59°F | 0.66" | 0" |
| 1974 | 86°F | 64°F | 5.08" | 0" |
| 1973 | 68°F | 55°F | 0.03" | 0" |
| 1972 | 68°F | 51°F | 0" | 0" |
| 1971 | 72°F | 37°F | 0" | 0" |