Weather on December 15
Saint Louis, MO
55 Years of Data
Avg High
45°F
Avg Low
28°F
Warmest
2021
63°F avg
Coldest
1989
-4°F avg
About This Date
December 15th in Saint Louis, MO typically brings chilly winter weather, with average highs around 45°F and lows near 28°F. Over 53 years of records, the warmest December 15th was in 2021 (63°F average), while the coldest was 1989 (-4°F) — a 67°F range across recorded history. Precipitation has occurred on 36% of recorded December 15th dates, with snow falling 9% of the time (heaviest snowfall: 6"). The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
Planning for December 15th in Saint Louis, MO? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 44° | 10° | 27° | — | — |
| 2024 | 55° | 44° | 50° | — | — |
| 2023 | 62° | 32° | 47° | — | — |
| 2022 | 38° | 35° | 36° | — | — |
| 2021warmest | 68° | 57° | 63° | — | — |
| 2020 | 34° | 22° | 28° | — | — |
| 2019 | 29° | 26° | 28° | 0.2" | — |
| 2018 | 49° | 35° | 42° | 1.3" | — |
| 2017 | 32° | 26° | 29° | — | — |
| 2016 | 31° | 14° | 22° | — | — |
| 2015 | 52° | 44° | 48° | — | — |
| 2014 | 62° | 47° | 54° | 0.76" | — |
| 2013 | 34° | 23° | 28° | — | — |
| 2012 | 55° | 43° | 49° | 1.4" | — |
| 2011 | 62° | 49° | 55° | 1.57" | — |
| 2010 | 23° | 9° | 16° | — | — |
| 2009 | 54° | 20° | 37° | — | — |
| 2008 | 59° | 13° | 36° | 0.84" | 0.2" |
| 2007 | 38° | 24° | 31° | 0.64" | 1.2" |
| 2006 | 67° | 34° | 50° | — | — |
| 2005 | 47° | 27° | 37° | — | — |
| 2004 | 31° | 14° | 22° | — | — |
| 2003 | 37° | 27° | 32° | — | — |
| 2002 | 53° | 33° | 43° | — | — |
| 2001 | 43° | 36° | 39° | — | — |
| 2000 | 24° | 11° | 17° | — | — |
| 1999 | 44° | 34° | 39° | — | — |
| 1998 | 53° | 24° | 39° | — | — |
| 1997 | 43° | 23° | 33° | — | — |
| 1996 | 54° | 38° | 46° | 0.51" | — |
| 1995 | 46° | 36° | 41° | 0.13" | — |
| 1994 | 54° | 33° | 43° | — | — |
| 1993 | 48° | 42° | 45° | 0.15" | — |
| 1992 | 56° | 44° | 50° | 5.08" | — |
| 1991 | 41° | 24° | 33° | — | — |
| 1990 | 52° | 34° | 43° | 0.61" | — |
| 1989coldest | 7° | -15° | -4° | 1.27" | 6" |
| 1988 | 32° | 7° | 19° | — | — |
| 1987 | 28° | 22° | 25° | 0.76" | 0.7" |
| 1986 | 51° | 36° | 43° | — | — |
| 1985 | 38° | 22° | 30° | — | — |
| 1982 | 45° | 30° | 37° | — | — |
| 1981 | 41° | 25° | 33° | — | — |
| 1980 | 48° | 37° | 43° | — | — |
| 1979 | 38° | 19° | 28° | — | — |
| 1978 | 45° | 28° | 36° | — | — |
| 1977 | 40° | 32° | 36° | — | — |
| 1976 | 52° | 22° | 37° | — | — |
| 1975 | 68° | 28° | 48° | 2.41" | — |
| 1974 | 51° | 25° | 38° | 0.18" | — |
| 1973 | 35° | 29° | 32° | 0.51" | 2" |
| 1972 | 28° | 18° | 23° | 0.23" | — |
| 1971 | 63° | 42° | 52° | 2.41" | — |
53 years of data from ST LOUIS ST LOUIS UNIV