Weather on October 18
Saint Louis, MO
55 Years of Data
Avg High
68°F
Avg Low
43°F
Warmest
2016
80°F avg
Coldest
1976
37°F avg
About This Date
October 18th in Saint Louis, MO typically brings mild fall weather, with average highs around 68°F and lows near 43°F — a 25°F daily swing. Over 52 years of records, the warmest October 18th was in 2016 (80°F average), while the coldest was 1976 (37°F) — a 43°F range across recorded history. Rain or other precipitation has occurred on about 29% of October 18th dates historically, with the wettest October 18th recording 5.59" of rain. The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
Planning for October 18th in Saint Louis, MO? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 60° | 67° | 5.56" | — |
| 2024 | 72° | 34° | 53° | — | — |
| 2023 | 75° | 38° | 56° | 0.1" | — |
| 2022 | 51° | 33° | 42° | — | — |
| 2021 | 74° | 40° | 57° | — | — |
| 2020 | 67° | 43° | 55° | 5.59" | — |
| 2019 | 68° | 38° | 53° | — | — |
| 2018 | 62° | 33° | 48° | — | — |
| 2017 | 73° | 54° | 63° | — | — |
| 2016warmest | 89° | 72° | 80° | — | — |
| 2015 | 58° | 36° | 47° | — | — |
| 2014 | 69° | 48° | 59° | — | — |
| 2013 | 65° | 46° | 55° | — | — |
| 2012 | 67° | 48° | 57° | 1.35" | — |
| 2011 | 49° | 44° | 46° | 3.3" | — |
| 2010 | 78° | 40° | 59° | — | — |
| 2009 | 51° | 30° | 41° | — | — |
| 2008 | 64° | 39° | 52° | — | — |
| 2007 | 74° | 53° | 63° | 1.7" | — |
| 2006 | 64° | 55° | 60° | — | — |
| 2005 | 84° | 49° | 66° | — | — |
| 2004 | 68° | 40° | 54° | 0.99" | — |
| 2003 | 61° | 42° | 51° | — | — |
| 2002 | 58° | 41° | 49° | — | — |
| 2001 | 59° | 34° | 46° | — | — |
| 2000 | 66° | 44° | 55° | 0.03" | — |
| 1999 | 58° | 32° | 45° | — | — |
| 1998 | 76° | 57° | 66° | 0.66" | — |
| 1997 | 59° | 33° | 46° | — | — |
| 1996 | 79° | 44° | 61° | 1.96" | — |
| 1995 | 83° | 56° | 69° | — | — |
| 1994 | 68° | 58° | 63° | 1.78" | — |
| 1993 | 60° | 50° | 55° | — | — |
| 1992 | 54° | 38° | 46° | — | — |
| 1991 | 75° | 32° | 54° | — | — |
| 1990 | 74° | 31° | 52° | 0.79" | — |
| 1989 | 47° | 35° | 41° | — | — |
| 1988 | 80° | 34° | 57° | 0.81" | — |
| 1987 | 70° | 45° | 57° | — | — |
| 1986 | 68° | 44° | 56° | — | — |
| 1985 | 79° | 60° | 69° | — | — |
| 1982 | 69° | 49° | 59° | — | — |
| 1980 | 75° | 50° | 63° | — | — |
| 1979 | 77° | 50° | 64° | 0.36" | — |
| 1978 | 54° | 30° | 42° | — | — |
| 1977 | 70° | 39° | 54° | — | — |
| 1976coldest | 50° | 23° | 37° | — | — |
| 1975 | 61° | 42° | 51° | — | — |
| 1974 | 76° | 38° | 57° | — | — |
| 1973 | 68° | 45° | 56° | — | — |
| 1972 | 62° | 42° | 52° | 0.13" | — |
| 1971 | 78° | 60° | 69° | — | — |
52 years of data from ST LOUIS ST LOUIS UNIV