Weather on April 20
Saint Louis, MO
55 Years of Data
Avg High
70°F
Avg Low
48°F
Warmest
2017
78°F avg
Coldest
2021
38°F avg
About This Date
April 20th in Saint Louis, MO typically brings pleasant spring weather, with average highs around 70°F and lows near 48°F. Over 55 years of records, the warmest April 20th was in 2017 (78°F average), while the coldest was 2021 (38°F) — a 40°F range across recorded history. Rain or other precipitation has occurred on about 49% of April 20th dates historically, with the wettest April 20th recording 4.11" of rain. The last decade has been 6.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 6.0°F cooler on this date compared to 20-30 years ago.
Planning for April 20th in Saint Louis, MO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 55° | 67° | 1.88" | — |
| 2024 | 61° | 43° | 52° | — | — |
| 2023 | 80° | 54° | 67° | 0.03" | — |
| 2022 | 64° | 46° | 55° | 0.48" | — |
| 2021coldest | 44° | 32° | 38° | 0.64" | — |
| 2020 | 71° | 36° | 53° | — | — |
| 2019 | 68° | 40° | 54° | — | — |
| 2018 | 63° | 32° | 47° | — | — |
| 2017warmest | 87° | 69° | 78° | — | — |
| 2016 | 73° | 58° | 65° | 0.36" | — |
| 2015 | 64° | 50° | 57° | 1.4" | — |
| 2014 | 75° | 53° | 64° | — | — |
| 2013 | 52° | 33° | 42° | — | — |
| 2012 | 77° | 55° | 66° | 0.13" | — |
| 2011 | 88° | 40° | 64° | 1.24" | — |
| 2010 | 64° | 41° | 53° | — | — |
| 2009 | 60° | 46° | 53° | 2.92" | — |
| 2008 | 58° | 47° | 52° | 0.1" | — |
| 2007 | 62° | 39° | 51° | — | — |
| 2006 | 75° | 48° | 62° | — | — |
| 2005 | 80° | 57° | 69° | — | — |
| 2004 | 81° | 62° | 71° | 0.05" | — |
| 2003 | 72° | 56° | 64° | 1.24" | — |
| 2002 | 85° | 58° | 71° | 1.55" | — |
| 2001 | 71° | 50° | 61° | — | — |
| 2000 | 85° | 60° | 72° | — | — |
| 1999 | 71° | 43° | 57° | — | — |
| 1998 | 64° | 43° | 53° | — | — |
| 1997 | 65° | 44° | 54° | — | — |
| 1996 | 79° | 50° | 64° | 0.76" | — |
| 1995 | 67° | 45° | 56° | 1.5" | — |
| 1994 | 74° | 53° | 63° | — | — |
| 1993 | 70° | 44° | 57° | 1.65" | — |
| 1992 | 70° | 59° | 64° | 0.71" | — |
| 1991 | 54° | 39° | 46° | — | — |
| 1990 | 70° | 55° | 62° | 0.76" | — |
| 1989 | 72° | 50° | 61° | — | — |
| 1988 | 79° | 39° | 59° | — | — |
| 1987 | 88° | 56° | 72° | — | — |
| 1986 | 58° | 44° | 51° | 0.51" | — |
| 1985 | 88° | 56° | 72° | — | — |
| 1984 | 59° | 46° | 53° | 4.11" | — |
| 1983 | 50° | 31° | 40° | — | — |
| 1982 | 60° | 43° | 51° | 0.64" | — |
| 1981 | 65° | 46° | 55° | 1.88" | — |
| 1980 | 82° | 53° | 68° | — | — |
| 1979 | 70° | 52° | 61° | — | — |
| 1978 | 50° | 40° | 45° | — | — |
| 1977 | 71° | 60° | 66° | 0.51" | — |
| 1976 | 67° | 57° | 62° | 1.91" | — |
| 1975 | 64° | 38° | 51° | 0.05" | — |
| 1974 | 76° | 53° | 64° | — | — |
| 1973 | 73° | 60° | 67° | 0.33" | — |
| 1972 | 83° | 55° | 69° | 2.92" | — |
| 1971 | 85° | 38° | 61° | — | — |
55 years of data from ST LOUIS ST LOUIS UNIV