Weather on December 18
Saint Louis, MO
55 Years of Data
About This Date
December 18th in Saint Louis, MO typically brings chilly winter weather, with average highs around 41°F and lows near 24°F. Over 54 years of records, the warmest December 18th was in 2002 (54°F average), while the coldest was 2000 (9°F) — a 45°F range across recorded history. Precipitation has occurred on 20% of recorded December 18th dates, with snow falling 2% of the time. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for December 18th in Saint Louis, MO? Bring layers as temperatures can vary throughout the day.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 58° | 27° | 42° | 0.34" | — |
| 2024 | 46° | 29° | 38° | 0.01" | — |
| 2023 | 39° | 26° | 33° | — | — |
| 2022 | 34° | 20° | 27° | — | — |
| 2021 | 39° | 30° | 35° | 0.25" | — |
| 2020 | 42° | 25° | 34° | — | — |
| 2019 | 32° | 15° | 24° | — | — |
| 2018 | 50° | 26° | 38° | — | — |
| 2017 | 55° | 46° | 51° | — | — |
| 2016 | 18° | 5° | 12° | — | — |
| 2015 | 36° | 28° | 32° | — | — |
| 2014 | 39° | 29° | 34° | — | — |
| 2013 | 43° | 26° | 34° | — | — |
| 2012 | 42° | 34° | 38° | — | — |
| 2011 | 48° | 24° | 36° | — | — |
| 2010 | 32° | 17° | 25° | — | — |
| 2009 | 54° | 23° | 38° | — | — |
| 2008 | 30° | 18° | 24° | — | — |
| 2007 | 36° | 12° | 24° | — | — |
| 2006 | 64° | 42° | 53° | — | — |
| 2005 | 42° | 20° | 31° | — | — |
| 2004 | 44° | 25° | 34° | — | — |
| 2003 | 42° | 32° | 37° | 0.06" | — |
| 2002warmest | 62° | 46° | 54° | 0.3" | — |
| 2001 | 48° | 28° | 38° | 0.12" | — |
| 2000coldest | 16° | 2° | 9° | — | — |
| 1999 | 55° | 31° | 43° | — | — |
| 1998 | 45° | 28° | 36° | — | — |
| 1997 | 51° | 26° | 39° | — | — |
| 1996 | 27° | 13° | 20° | 0.03" | 0.4" |
| 1995 | 44° | 36° | 40° | 0.5" | — |
| 1994 | 55° | 26° | 41° | — | — |
| 1993 | 50° | 35° | 43° | — | — |
| 1992 | 40° | 30° | 35° | — | — |
| 1991 | 41° | 24° | 33° | — | — |
| 1990 | 46° | 30° | 38° | 0.2" | — |
| 1989 | 23° | 9° | 16° | — | — |
| 1988 | 60° | 35° | 48° | — | — |
| 1987 | 34° | 29° | 31° | 0.01" | — |
| 1986 | 40° | 19° | 29° | — | — |
| 1985 | 22° | 7° | 14° | — | — |
| 1984 | 45° | 28° | 36° | 0.12" | — |
| 1982 | 45° | 28° | 36° | — | — |
| 1981 | 23° | 2° | 12° | — | — |
| 1980 | 46° | 32° | 39° | — | — |
| 1979 | 25° | 9° | 17° | — | — |
| 1978 | 47° | 33° | 40° | — | — |
| 1977 | 55° | 35° | 45° | — | — |
| 1976 | 58° | 26° | 42° | — | — |
| 1975 | 22° | 8° | 15° | — | — |
| 1974 | 34° | 15° | 24° | — | — |
| 1973 | 28° | 13° | 20° | — | — |
| 1972 | 39° | 16° | 27° | — | — |
| 1971 | 46° | 17° | 32° | — | — |
Saint Louis, MO Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Saint Louis, MO Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Saint Louis, MO Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Saint Louis, MO
Most pleasant months in Saint Louis, MO: April, May, September, October.
What to expect on December 18th
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
December 18th outlook →