Weather on December 21
Kansas City, MO
55 Years of Data
Avg High
40°F
Avg Low
24°F
Warmest
2023
55°F avg
Coldest
1989
-3°F avg
About This Date
December 21st in Kansas City, MO typically brings chilly winter weather, with average highs around 40°F and lows near 24°F. Over 53 years of records, the warmest December 21st was in 2023 (55°F average), while the coldest was 1989 (-3°F) — a 58°F range across recorded history. Precipitation has occurred on 15% of recorded December 21st dates, with snow falling 4% of the time (heaviest snowfall: 4"). The last decade has been 9.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 9.7°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Kansas City, MO? Bring layers as temperatures can vary throughout the day.
Warming Trend
2.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 53° | 25° | 39° | — | — |
| 2024 | 39° | 20° | 30° | — | — |
| 2023warmest | 59° | 52° | 55° | 0.08" | — |
| 2022 | 35° | 21° | 28° | — | — |
| 2021 | 48° | 23° | 36° | — | — |
| 2020 | 59° | 33° | 46° | — | — |
| 2019 | 52° | 28° | 40° | — | — |
| 2018 | 46° | 28° | 37° | — | — |
| 2017 | 54° | 36° | 45° | — | — |
| 2016 | 49° | 21° | 35° | — | — |
| 2015 | 59° | 33° | 46° | 0.1" | — |
| 2014 | 47° | 35° | 41° | — | — |
| 2013 | 30° | 23° | 27° | 0.48" | — |
| 2012 | 41° | 19° | 30° | — | — |
| 2011 | 50° | 32° | 41° | — | — |
| 2010 | 48° | 26° | 37° | — | — |
| 2009 | 44° | 29° | 36° | — | — |
| 2008 | 12° | 1° | 7° | — | — |
| 2007 | 54° | 28° | 41° | — | — |
| 2006 | 55° | 35° | 45° | — | — |
| 2005 | 37° | 24° | 31° | — | — |
| 2004 | 37° | 21° | 29° | — | — |
| 2003 | 55° | 43° | 49° | — | — |
| 2002 | 44° | 27° | 35° | — | — |
| 2001 | 55° | 31° | 43° | — | — |
| 2000 | 14° | 5° | 10° | — | — |
| 1999 | 27° | 14° | 20° | — | — |
| 1998 | 27° | 8° | 17° | — | — |
| 1997 | 33° | 29° | 31° | 1.27" | — |
| 1996 | — | 32° | — | — | — |
| 1995 | 33° | 28° | 31° | — | — |
| 1994 | 42° | 35° | 39° | 0.23" | — |
| 1993 | 43° | 21° | 32° | — | — |
| 1992 | 44° | 30° | 37° | — | — |
| 1991 | 37° | 33° | 35° | — | — |
| 1990 | 9° | 0° | 4° | — | — |
| 1989coldest | 5° | -11° | -3° | — | — |
| 1988 | 44° | 26° | 35° | — | — |
| 1987 | 45° | 27° | 36° | — | — |
| 1986 | 39° | 34° | 36° | — | — |
| 1985 | 37° | 8° | 23° | — | — |
| 1984 | 54° | 34° | 44° | 0.25" | — |
| 1983 | 11° | -5° | 3° | 1.02" | 4" |
| 1982 | 56° | 31° | 43° | — | — |
| 1981 | 37° | 35° | 36° | — | — |
| 1980 | 27° | 12° | 19° | — | — |
| 1979 | 60° | 37° | 49° | — | — |
| 1977 | 25° | 13° | 19° | 0.03" | 0.2" |
| 1976 | 29° | 8° | 18° | — | — |
| 1975 | 39° | 13° | 26° | — | — |
| 1974 | 36° | 27° | 31° | — | — |
| 1973 | 19° | 5° | 12° | — | — |
| 1971 | 33° | 29° | 31° | — | — |
53 years of data from KANSAS CITY DWTN AP