Weather on May 15
Saint Louis, MO
55 Years of Data
Avg High
75°F
Avg Low
55°F
Warmest
2013
82°F avg
Coldest
2016
51°F avg
About This Date
May 15th in Saint Louis, MO typically brings pleasant spring weather, with average highs around 75°F and lows near 55°F. Over 53 years of records, the warmest May 15th was in 2013 (82°F average), while the coldest was 2016 (51°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 43% of May 15th dates historically, with the wettest May 15th recording 3" of rain. The last decade has been 5.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.2°F warmer on this date compared to 20-30 years ago.
Planning for May 15th in Saint Louis, MO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 86° | 69° | 78° | — | — |
| 2024 | 78° | 61° | 69° | — | — |
| 2023 | 76° | 63° | 69° | 0.05" | — |
| 2022 | 86° | 61° | 73° | 0.18" | — |
| 2021 | 65° | 49° | 57° | 0.03" | — |
| 2020 | 76° | 60° | 68° | 0.58" | — |
| 2019 | 80° | 57° | 69° | 0.36" | — |
| 2018 | 91° | 72° | 81° | 1.02" | — |
| 2017 | 84° | 62° | 73° | — | — |
| 2016coldest | 60° | 43° | 51° | — | — |
| 2015 | 84° | 61° | 72° | 0.28" | — |
| 2014 | 58° | 46° | 52° | 1.14" | — |
| 2013warmest | 93° | 71° | 82° | — | — |
| 2012 | 78° | 50° | 64° | — | — |
| 2011 | 55° | 49° | 52° | 0.3" | — |
| 2010 | 64° | 55° | 60° | 1.57" | — |
| 2009 | 76° | 61° | 68° | — | — |
| 2008 | 69° | 52° | 60° | — | — |
| 2007 | 83° | 65° | 74° | — | — |
| 2006 | 56° | 49° | 52° | 0.15" | — |
| 2005 | 73° | 46° | 60° | — | — |
| 2004 | 61° | 51° | 56° | 0.36" | — |
| 2003 | 75° | 58° | 66° | 0.36" | — |
| 2002 | 70° | 48° | 59° | — | — |
| 2001 | 87° | 63° | 75° | — | — |
| 2000 | 70° | 51° | 60° | — | — |
| 1999 | 62° | 54° | 58° | — | — |
| 1998 | 88° | 70° | 79° | — | — |
| 1997 | 70° | 42° | 56° | — | — |
| 1996 | 85° | 50° | 67° | 0.71" | — |
| 1995 | 76° | 55° | 65° | — | — |
| 1994 | 78° | 62° | 70° | 0.33" | — |
| 1993 | 82° | 55° | 69° | — | — |
| 1992 | 80° | 53° | 67° | — | — |
| 1991 | 84° | 64° | 74° | 0.25" | — |
| 1990 | 73° | 58° | 65° | 1.65" | — |
| 1989 | 77° | 47° | 62° | — | — |
| 1988 | 88° | 57° | 72° | — | — |
| 1987 | 84° | 48° | 66° | 0.1" | — |
| 1986 | 78° | 61° | 69° | 1.32" | — |
| 1985 | 80° | 55° | 68° | 0.25" | — |
| 1984 | 75° | 43° | 59° | — | — |
| 1981 | 61° | 50° | 55° | — | — |
| 1980 | 74° | 48° | 61° | — | — |
| 1979 | 75° | 45° | 60° | — | — |
| 1978 | 64° | — | — | 0.13" | — |
| 1977 | 81° | 55° | 68° | — | — |
| 1976 | 65° | 60° | 62° | 0.66" | — |
| 1975 | 77° | 58° | 67° | — | — |
| 1974 | 68° | 47° | 57° | 3" | — |
| 1973 | 63° | 43° | 53° | — | — |
| 1972 | 73° | 56° | 64° | — | — |
| 1971 | 70° | 47° | 58° | — | — |
53 years of data from ST LOUIS ST LOUIS UNIV