Weather on October 31
Saint Louis, MO
55 Years of Data
Avg High
65°F
Avg Low
42°F
Warmest
1974
72°F avg
Coldest
2019
32°F avg
About This Date
October 31st in Saint Louis, MO typically brings mild fall weather, with average highs around 65°F and lows near 42°F. Over 52 years of records, the warmest October 31st was in 1974 (72°F average), while the coldest was 2019 (32°F) — a 40°F range across recorded history. Rain or other precipitation has occurred on about 38% of October 31st dates historically, with the wettest October 31st recording 2.46" of rain. The last decade has been 8.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 8.9°F cooler on this date compared to 20-30 years ago.
Planning for October 31st in Saint Louis, MO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 65° | 38° | 51° | — | — |
| 2024 | 71° | 47° | 59° | 1.47" | — |
| 2023 | 44° | 23° | 34° | — | — |
| 2022 | 59° | 45° | 52° | — | — |
| 2021 | 57° | 38° | 47° | — | — |
| 2020 | 63° | 37° | 50° | — | — |
| 2019coldest | 37° | 26° | 32° | — | — |
| 2018 | 71° | 49° | 60° | 2.46" | — |
| 2017 | 53° | 36° | 44° | — | — |
| 2016 | 74° | 53° | 63° | — | — |
| 2015 | 58° | 46° | 52° | 0.41" | — |
| 2014 | 60° | 40° | 50° | — | — |
| 2013 | 72° | 62° | 67° | 1.75" | — |
| 2012 | 58° | 36° | 47° | — | — |
| 2011 | 63° | 37° | 50° | — | — |
| 2010 | 75° | 39° | 57° | — | — |
| 2009 | 63° | 41° | 52° | 1.96" | — |
| 2008 | 74° | 34° | 54° | — | — |
| 2007 | 72° | 33° | 52° | — | — |
| 2006 | 74° | 42° | 58° | 0.13" | — |
| 2005 | 70° | 43° | 56° | 0.97" | — |
| 2004 | 71° | 47° | 59° | — | — |
| 2003 | 75° | 66° | 71° | — | — |
| 2002 | 47° | 42° | 44° | 0.05" | — |
| 2001 | 72° | 40° | 56° | — | — |
| 2000 | 74° | 55° | 64° | 0.18" | — |
| 1999 | 78° | 55° | 67° | — | — |
| 1998 | 71° | 46° | 59° | — | — |
| 1997 | 68° | 46° | 57° | — | — |
| 1996 | 60° | 35° | 48° | — | — |
| 1995 | 68° | 46° | 57° | 0.2" | — |
| 1994 | 66° | 41° | 54° | 0.79" | — |
| 1993 | 42° | 29° | 35° | — | — |
| 1992 | 58° | 47° | 52° | — | — |
| 1991 | 50° | 33° | 42° | 0.15" | — |
| 1990 | 79° | 43° | 61° | — | — |
| 1989 | 56° | 28° | 42° | 0.86" | — |
| 1988 | 60° | 33° | 47° | — | — |
| 1987 | 80° | 55° | 68° | — | — |
| 1986 | 73° | 44° | 59° | — | — |
| 1985 | 56° | 48° | 52° | 2.34" | — |
| 1982 | 70° | 39° | 54° | 0.28" | — |
| 1980 | — | 29° | — | — | — |
| 1979 | 69° | 56° | 62° | 0.05" | — |
| 1978 | 65° | 33° | 49° | — | — |
| 1977 | 67° | 44° | 55° | 0.86" | — |
| 1976 | 48° | 42° | 45° | 0.05" | — |
| 1975 | 62° | 36° | 49° | — | — |
| 1974warmest | 81° | 64° | 72° | — | — |
| 1973 | 63° | 42° | 52° | 1.78" | — |
| 1972 | 55° | 46° | 51° | 1.91" | — |
| 1971 | 73° | 43° | 58° | — | — |
52 years of data from ST LOUIS ST LOUIS UNIV