Weather on October 20
Saint Louis, MO
55 Years of Data
Avg High
67°F
Avg Low
43°F
Warmest
1979
70°F avg
Coldest
1972
35°F avg
About This Date
October 20th in Saint Louis, MO typically brings mild fall weather, with average highs around 67°F and lows near 43°F. Over 52 years of records, the warmest October 20th was in 1979 (70°F average), while the coldest was 1972 (35°F) — a 35°F range across recorded history. Rain or other precipitation has occurred on about 27% of October 20th dates historically, with the wettest October 20th recording 1.52" of rain. The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
Planning for October 20th in Saint Louis, MO? Great weather for outdoor activities.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 38° | 56° | — | — |
| 2024 | 77° | 36° | 56° | — | — |
| 2023 | 73° | 44° | 59° | — | — |
| 2022 | 73° | 26° | 50° | — | — |
| 2021 | 80° | 46° | 63° | — | — |
| 2020 | 60° | 46° | 53° | 1.27" | — |
| 2019 | 67° | 55° | 61° | — | — |
| 2018 | 67° | 37° | 52° | — | — |
| 2017 | 65° | 59° | 62° | — | — |
| 2016 | 64° | 50° | 57° | 1.52" | — |
| 2015 | 77° | 54° | 65° | — | — |
| 2014 | 69° | 55° | 62° | — | — |
| 2013 | 65° | 44° | 54° | — | — |
| 2012 | 54° | 47° | 50° | — | — |
| 2011 | 52° | 41° | 46° | 0.18" | — |
| 2010 | 67° | 39° | 53° | — | — |
| 2009 | 72° | 44° | 58° | — | — |
| 2008 | 67° | 40° | 53° | — | — |
| 2007 | 69° | 46° | 58° | — | — |
| 2006 | 66° | 32° | 49° | — | — |
| 2005 | 79° | 53° | 66° | 0.03" | — |
| 2004 | 53° | 51° | 52° | 0.03" | — |
| 2003 | 83° | 57° | 70° | — | — |
| 2002 | 55° | 39° | 47° | 0.03" | — |
| 2001 | 67° | 42° | 54° | — | — |
| 2000 | 76° | 44° | 60° | — | — |
| 1999 | 64° | 36° | 50° | — | — |
| 1998 | 66° | 42° | 54° | — | — |
| 1997 | 70° | 39° | 54° | — | — |
| 1996 | 61° | 34° | 47° | — | — |
| 1995 | 80° | 43° | 61° | 0.71" | — |
| 1994 | 75° | 46° | 61° | — | — |
| 1993 | 62° | 58° | 60° | 1.35" | — |
| 1992 | 70° | 40° | 55° | 1.02" | — |
| 1991 | 58° | 34° | 46° | — | — |
| 1990 | 72° | 46° | 59° | — | — |
| 1989 | 56° | 37° | 46° | — | — |
| 1988 | 52° | 45° | 48° | 0.71" | — |
| 1987 | 50° | 31° | 40° | — | — |
| 1986 | 78° | 48° | 63° | — | — |
| 1985 | 73° | 57° | 65° | 0.08" | — |
| 1982 | 75° | 23° | 49° | 1.02" | — |
| 1980 | — | 40° | — | — | — |
| 1979warmest | 78° | 63° | 70° | 0.03" | — |
| 1978 | 77° | 31° | 54° | — | — |
| 1977 | 64° | 33° | 49° | — | — |
| 1976 | 43° | 40° | 41° | 0.58" | — |
| 1975 | 62° | 38° | 50° | — | — |
| 1974 | 64° | 39° | 52° | — | — |
| 1973 | 74° | 45° | 59° | — | — |
| 1972coldest | 45° | 25° | 35° | — | — |
| 1971 | 76° | 50° | 63° | — | — |
52 years of data from ST LOUIS ST LOUIS UNIV