Weather on June 20 at Gateway Arch
Gateway Arch National Park
Based on 53 years of data from St. Louis, MO
Planning Your Visit
June 20th in Gateway Arch National Park (via St. Louis, MO) typically brings warm summer weather, with average highs around 88°F and lows near 67°F. Over 53 years of records, the warmest June 20th was in 1994 (84°F average), while the coldest was 1980 (64°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 36% of June 20th dates historically, with the wettest June 20th recording 4.55" of rain. The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
Planning for June 20th 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 | 94°F | 64°F | 0" | 0" |
| 2024 | 95°F | 69°F | 0" | 0" |
| 2023 | 89°F | 64°F | 0" | 0" |
| 2022 | 96°F | 57°F | 0" | 0" |
| 2021 | 92°F | 73°F | 0" | 0" |
| 2020 | 93°F | 67°F | 0.03" | 0" |
| 2019 | 82°F | 66°F | 0" | -- |
| 2018 | 94°F | 74°F | 4.55" | 0" |
| 2017 | 85°F | 64°F | 0" | 0" |
| 2016 | 92°F | 76°F | 0" | 0" |
| 2015 | 89°F | 71°F | 0" | 0" |
| 2014 | 93°F | 75°F | 0" | 0" |
| 2013 | 86°F | 70°F | 0" | 0" |
| 2012 | 93°F | 73°F | 0" | 0" |
| 2011 | 89°F | 74°F | 0" | -- |
| 2010 | 92°F | 70°F | 0.1" | 0" |
| 2009 | 93°F | 74°F | 0.69" | 0" |
| 2008 | 85°F | 65°F | 2.34" | 0" |
| 2007 | 87°F | 61°F | 0" | 0" |
| 2006 | 91°F | 72°F | 0" | 0" |
| 2005 | 81°F | 59°F | 0" | 0" |
| 2004 | 74°F | 55°F | 0" | 0" |
| 2003 | 80°F | 54°F | 0.23" | 0" |
| 2002 | 88°F | 70°F | 0" | 0" |
| 2001 | 90°F | 68°F | 2.46" | 0" |
| 2000 | 81°F | 70°F | 0.05" | 0" |
| 1999 | 79°F | 61°F | 0" | 0" |
| 1998 | 89°F | 67°F | 0.51" | 0" |
| 1997 | 90°F | 71°F | 0" | 0" |
| 1996 | 92°F | 71°F | 0" | 0" |
| 1995 | 92°F | 73°F | 0" | 0" |
| 1994 | 94°F | 75°F | 0.43" | 0" |
| 1993 | 82°F | 70°F | 0.43" | 0" |
| 1992 | 85°F | 58°F | 1.22" | 0" |
| 1991 | 87°F | 70°F | 0" | 0" |
| 1990 | 87°F | 64°F | 1.12" | 0" |
| 1989 | 87°F | 63°F | 0" | 0" |
| 1988 | 97°F | 69°F | 0" | 0" |
| 1987 | 89°F | 68°F | 0.03" | 0" |
| 1986 | 94°F | 66°F | 0" | 0" |
| 1985 | 81°F | 63°F | 0" | 0" |
| 1984 | 93°F | 71°F | 0" | 0" |
| 1981 | 82°F | 66°F | 3" | 0" |
| 1980 | 77°F | 52°F | 0" | -- |
| 1979 | 93°F | 73°F | 0.1" | 0" |
| 1978 | 80°F | -- | 0" | 0" |
| 1977 | 76°F | 66°F | 0.03" | 0" |
| 1976 | 79°F | 51°F | 0" | 0" |
| 1975 | 94°F | 68°F | 0" | 0" |
| 1974 | 88°F | 67°F | 1.42" | 0" |
| 1973 | 88°F | 67°F | 0" | 0" |
| 1972 | 95°F | 70°F | 1.78" | 0" |
| 1971 | 96°F | -- | 0" | 0" |