Weather on May 20
Saint Louis, MO
55 Years of Data
Avg High
79°F
Avg Low
57°F
Warmest
1998
81°F avg
Coldest
1981
51°F avg
About This Date
May 20th in Saint Louis, MO typically brings pleasant spring weather, with average highs around 79°F and lows near 57°F. Over 53 years of records, the warmest May 20th was in 1998 (81°F average), while the coldest was 1981 (51°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 30% of May 20th dates historically, with the wettest May 20th recording 3.15" 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 May 20th in Saint Louis, MO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 64° | 72° | 0.08" | — |
| 2024 | 87° | 68° | 78° | — | — |
| 2023 | 72° | 52° | 62° | — | — |
| 2022 | 87° | 64° | 76° | — | — |
| 2021 | 87° | 66° | 77° | — | — |
| 2020 | 70° | 57° | 63° | — | — |
| 2019 | 71° | 53° | 62° | — | — |
| 2018 | 82° | 66° | 74° | 2.54" | — |
| 2017 | — | 62° | — | 3.15" | — |
| 2016 | 72° | 58° | 65° | 0.03" | — |
| 2015 | 64° | 52° | 58° | — | — |
| 2014 | 81° | 60° | 70° | — | — |
| 2013 | 91° | 63° | 77° | 0.43" | — |
| 2012 | 86° | 63° | 74° | — | — |
| 2011 | 68° | 60° | 64° | 0.28" | — |
| 2010 | 70° | 57° | 63° | 2.08" | — |
| 2009 | 78° | 49° | 63° | — | — |
| 2008 | 77° | 48° | 63° | — | — |
| 2007 | 77° | 52° | 64° | — | — |
| 2006 | 83° | 57° | 70° | — | — |
| 2005 | 87° | 61° | 74° | 2.03" | — |
| 2004 | 81° | 65° | 73° | 2.13" | — |
| 2003 | 82° | 55° | 69° | 0.3" | — |
| 2002 | 66° | 42° | 54° | — | — |
| 2001 | 79° | 64° | 71° | — | — |
| 2000 | 61° | 48° | 54° | — | — |
| 1999 | 77° | 52° | 64° | — | — |
| 1998warmest | 90° | 72° | 81° | — | — |
| 1997 | 72° | 46° | 59° | — | — |
| 1996 | 91° | 69° | 80° | — | — |
| 1995 | 77° | 51° | 64° | — | — |
| 1994 | 78° | 48° | 63° | — | — |
| 1993 | 65° | 48° | 56° | — | — |
| 1992 | 82° | 60° | 71° | 0.76" | — |
| 1991 | 80° | 67° | 73° | — | — |
| 1990 | 76° | 56° | 66° | 0.66" | — |
| 1989 | 83° | 56° | 69° | — | — |
| 1988 | 88° | 55° | 71° | — | — |
| 1987 | 94° | 66° | 80° | — | — |
| 1986 | 68° | 41° | 55° | — | — |
| 1985 | 84° | 60° | 72° | — | — |
| 1984 | 80° | 58° | 69° | 1.57" | — |
| 1981coldest | 61° | 41° | 51° | — | — |
| 1980 | 75° | 54° | 64° | — | — |
| 1979 | 81° | 61° | 71° | 0.15" | — |
| 1978 | 81° | 63° | 72° | 0.3" | — |
| 1977 | 90° | 60° | 75° | — | — |
| 1976 | 78° | 51° | 65° | — | — |
| 1975 | 91° | 69° | 80° | 0.05" | — |
| 1974 | 87° | 64° | 76° | — | — |
| 1973 | 81° | 54° | 67° | — | — |
| 1972 | 89° | 65° | 77° | — | — |
| 1971 | 72° | 49° | 60° | — | — |
53 years of data from ST LOUIS ST LOUIS UNIV