Weather on December 31
Saint Louis, MO
55 Years of Data
Avg High
43°F
Avg Low
27°F
Warmest
2004
56°F avg
Coldest
2017
5°F avg
About This Date
December 31st in Saint Louis, MO typically brings chilly winter weather, with average highs around 43°F and lows near 27°F. Over 54 years of records, the warmest December 31st was in 2004 (56°F average), while the coldest was 2017 (5°F) — a 51°F range across recorded history. Precipitation has occurred on 31% of recorded December 31st dates, with snow falling 11% of the time (heaviest snowfall: 1.2"). The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
Planning for December 31st in Saint Louis, MO? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
1.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 40° | 24° | 32° | — | — |
| 2024 | 52° | 34° | 43° | 0.28" | — |
| 2023 | 40° | 35° | 37° | — | — |
| 2022 | 50° | 33° | 42° | — | — |
| 2021 | 67° | 41° | 54° | 0.74" | — |
| 2020 | 34° | 25° | 30° | — | — |
| 2019 | 41° | 34° | 37° | — | — |
| 2018 | 50° | 40° | 45° | 2.95" | — |
| 2017coldest | 15° | -6° | 5° | — | — |
| 2016 | 50° | 38° | 44° | — | — |
| 2015 | 36° | 31° | 33° | — | — |
| 2014 | 29° | 13° | 21° | — | — |
| 2013 | 42° | 22° | 32° | — | — |
| 2012 | 38° | 32° | 35° | — | 0.2" |
| 2011 | 58° | 29° | 43° | — | — |
| 2010 | 58° | 49° | 53° | 0.1" | — |
| 2009 | 35° | 29° | 32° | 0.08" | 0.2" |
| 2008 | 67° | 22° | 44° | — | — |
| 2007 | 47° | 22° | 34° | — | — |
| 2006 | 57° | 49° | 53° | 1.3" | — |
| 2005 | 42° | 32° | 37° | 0.25" | — |
| 2004warmest | 64° | 48° | 56° | — | — |
| 2003 | 55° | 38° | 46° | — | — |
| 2002 | 69° | 34° | 51° | 0.53" | — |
| 2001 | 28° | 12° | 20° | — | — |
| 2000 | 20° | 13° | 16° | — | — |
| 1999 | 53° | 22° | 37° | — | — |
| 1998 | 19° | 10° | 15° | 0.25" | 1.2" |
| 1997 | 34° | 25° | 29° | 0.13" | 0.5" |
| 1996 | 47° | 36° | 41° | — | — |
| 1995 | 37° | 33° | 35° | 0.25" | 0.3" |
| 1994 | 41° | 35° | 38° | 0.2" | — |
| 1993 | 49° | 24° | 36° | — | — |
| 1992 | 62° | 20° | 41° | 0.36" | — |
| 1991 | 35° | 32° | 34° | — | — |
| 1990 | 17° | 10° | 14° | — | — |
| 1989 | 39° | 24° | 32° | 0.2" | — |
| 1988 | 40° | 30° | 35° | — | — |
| 1987 | 45° | 13° | 29° | — | — |
| 1986 | 40° | 21° | 30° | — | — |
| 1985 | 36° | 17° | 26° | — | — |
| 1984 | 43° | 23° | 33° | 3.84" | — |
| 1982 | 35° | 24° | 30° | — | — |
| 1981 | 43° | 22° | 32° | — | — |
| 1980 | 49° | 33° | 41° | — | — |
| 1979 | 44° | 34° | 39° | — | — |
| 1978 | 32° | 21° | 27° | 2.08" | 0.5" |
| 1977 | 44° | 34° | 39° | — | — |
| 1976 | 23° | -7° | 8° | — | — |
| 1975 | 38° | 34° | 36° | — | — |
| 1974 | 42° | 35° | 39° | 2.39" | — |
| 1973 | 29° | 8° | 18° | — | — |
| 1972 | 53° | 30° | 42° | — | — |
| 1971 | 48° | 35° | 42° | — | — |
54 years of data from ST LOUIS ST LOUIS UNIV