Weather on May 18
Saint Louis, MO
55 Years of Data
Avg High
76°F
Avg Low
57°F
Warmest
1996
80°F avg
Coldest
2002
49°F avg
About This Date
May 18th in Saint Louis, MO typically brings pleasant spring weather, with average highs around 76°F and lows near 57°F. Over 52 years of records, the warmest May 18th was in 1996 (80°F average), while the coldest was 2002 (49°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 33% of May 18th dates historically, with the wettest May 18th recording 8.89" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for May 18th in Saint Louis, MO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 57° | 68° | — | — |
| 2024 | 87° | 61° | 74° | — | — |
| 2023 | 83° | 58° | 70° | — | — |
| 2022 | 83° | 63° | 73° | 1.12" | — |
| 2021 | 74° | 62° | 68° | 1.04" | — |
| 2020 | 65° | 57° | 61° | — | — |
| 2019 | 87° | 65° | 76° | — | — |
| 2018 | 82° | 64° | 73° | — | — |
| 2017 | 81° | 78° | 79° | — | — |
| 2016 | 56° | 48° | 52° | 0.76" | — |
| 2015 | 82° | 67° | 74° | — | — |
| 2014 | 66° | 45° | 55° | — | — |
| 2013 | 79° | 64° | 71° | — | — |
| 2012 | 78° | 52° | 65° | — | — |
| 2011 | 63° | 51° | 57° | — | — |
| 2010 | 62° | 54° | 58° | 0.03" | — |
| 2009 | 64° | 42° | 53° | — | — |
| 2008 | 81° | 57° | 69° | — | — |
| 2007 | 64° | 41° | 53° | — | — |
| 2006 | 76° | 55° | 65° | — | — |
| 2005 | 74° | 50° | 62° | — | — |
| 2004 | 83° | 65° | 74° | — | — |
| 2003 | 71° | 61° | 66° | — | — |
| 2002coldest | 59° | 40° | 49° | 1.52" | — |
| 2001 | 86° | 68° | 77° | 0.41" | — |
| 2000 | 84° | 68° | 76° | — | — |
| 1999 | 82° | 59° | 71° | 0.41" | — |
| 1998 | 87° | 56° | 71° | — | — |
| 1997 | 87° | 66° | 77° | 0.1" | — |
| 1996warmest | 93° | 67° | 80° | — | — |
| 1995 | 71° | 54° | 62° | 8.89" | — |
| 1994 | 74° | 49° | 61° | — | — |
| 1993 | 71° | 55° | 63° | 3.05" | — |
| 1992 | 75° | 63° | 69° | 0.46" | — |
| 1991 | 86° | 62° | 74° | — | — |
| 1990 | 78° | 58° | 68° | — | — |
| 1989 | 79° | 60° | 69° | — | — |
| 1988 | 80° | 51° | 66° | — | — |
| 1987 | 93° | 63° | 78° | 0.23" | — |
| 1986 | 62° | 50° | 56° | 0.1" | — |
| 1984 | 79° | 53° | 66° | — | — |
| 1981 | 60° | 42° | 51° | 7.85" | — |
| 1980 | 75° | 59° | 67° | 0.51" | — |
| 1979 | 81° | 45° | 63° | — | — |
| 1978 | 74° | — | — | — | — |
| 1977 | 81° | 55° | 68° | — | — |
| 1976 | 64° | 45° | 54° | 0.05" | — |
| 1975 | 81° | 55° | 68° | — | — |
| 1974 | 80° | 64° | 72° | 0.3" | — |
| 1973 | 67° | 47° | 57° | — | — |
| 1972 | 84° | 62° | 73° | — | — |
| 1971 | 78° | 66° | 72° | — | — |
52 years of data from ST LOUIS ST LOUIS UNIV