Weather on April 18 at Gateway Arch
Gateway Arch National Park
Based on 56 years of data from St. Louis, MO
Planning Your Visit
April 18th in Gateway Arch National Park (via St. Louis, MO) typically brings pleasant spring weather, with average highs around 71°F and lows near 48°F. Over 56 years of records, the warmest April 18th was in 2004 (76°F average), while the coldest was 1983 (38°F) — a 38°F range across recorded history. Rain or other precipitation has occurred on about 32% of April 18th dates historically, with the wettest April 18th recording 3.56" of rain. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for April 18th in Gateway Arch? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2026 | 63°F | 41°F | 1.6" | 0" |
| 2025 | 78°F | 61°F | 0.1" | 0" |
| 2024 | 85°F | 53°F | 2.21" | 0" |
| 2023 | 74°F | 38°F | 0" | 0" |
| 2022 | 54°F | 36°F | 0" | 0" |
| 2021 | 68°F | 41°F | 0" | 0" |
| 2020 | 62°F | 29°F | 0" | 0" |
| 2019 | 66°F | 47°F | 2.79" | 0" |
| 2018 | -- | 35°F | 0" | 0" |
| 2017 | 71°F | 52°F | 0.13" | 0" |
| 2016 | 81°F | 57°F | 0" | 0" |
| 2015 | 79°F | 61°F | 0" | 0" |
| 2014 | 67°F | 47°F | 0" | 0" |
| 2013 | 84°F | 55°F | 3.56" | 0" |
| 2012 | 76°F | 44°F | 0" | -- |
| 2011 | 75°F | 59°F | 0" | 0" |
| 2010 | 64°F | 36°F | 0" | 0" |
| 2009 | 74°F | 50°F | 0" | 0" |
| 2008 | 77°F | 58°F | 0" | 0" |
| 2007 | 76°F | 39°F | 0" | 0" |
| 2006 | 64°F | 51°F | 0" | 0" |
| 2005 | 82°F | 52°F | 0" | 0" |
| 2004 | 87°F | 64°F | 0" | 0" |
| 2003 | 52°F | 47°F | 0" | 0" |
| 2002 | 87°F | 60°F | 0" | 0" |
| 2001 | 54°F | 31°F | 0" | 0" |
| 2000 | 54°F | 41°F | 0" | 0" |
| 1999 | 52°F | 37°F | 0.05" | 0" |
| 1998 | 59°F | 40°F | 0" | 0" |
| 1997 | 55°F | 33°F | 0" | 0" |
| 1996 | 77°F | 56°F | 0.58" | 0" |
| 1995 | 82°F | 65°F | 0.28" | 0" |
| 1994 | 86°F | 53°F | 0" | 0" |
| 1993 | 69°F | 39°F | 0.03" | 0" |
| 1992 | 78°F | 56°F | 2.39" | 0" |
| 1991 | 73°F | 48°F | 0" | 0" |
| 1990 | 58°F | 41°F | 0" | 0" |
| 1989 | 68°F | 37°F | 0" | 0" |
| 1988 | 58°F | 28°F | 1.78" | 0" |
| 1987 | 80°F | 50°F | 0" | 0" |
| 1986 | 68°F | 58°F | 0.13" | 0" |
| 1985 | 87°F | 56°F | 0" | 0" |
| 1984 | 65°F | 37°F | 0" | 0" |
| 1983 | 45°F | 31°F | 0.69" | 0" |
| 1982 | 75°F | 37°F | 1.02" | 0" |
| 1981 | 87°F | 57°F | 0.79" | 0" |
| 1980 | 71°F | 48°F | 0" | 0" |
| 1979 | 65°F | 50°F | 0" | 0" |
| 1978 | 68°F | 47°F | 0.58" | 0" |
| 1977 | 88°F | 53°F | 0" | 0" |
| 1976 | 84°F | 63°F | 0" | 0" |
| 1975 | 72°F | 51°F | 0" | 0" |
| 1974 | 67°F | 41°F | 0" | 0" |
| 1973 | 71°F | 62°F | 0.1" | 0" |
| 1972 | 83°F | 52°F | 0" | 0" |
| 1971 | 83°F | 60°F | 0" | 0" |