Weather on December 21
Olathe, KS
55 Years of Data
Avg High
40°F
Avg Low
23°F
Warmest
2023
53°F avg
Coldest
1983
3°F avg
About This Date
December 21st in Olathe, KS typically brings chilly winter weather, with average highs around 40°F and lows near 23°F. Over 55 years of records, the warmest December 21st was in 2023 (53°F average), while the coldest was 1983 (3°F) — a 50°F range across recorded history. Precipitation has occurred on 18% of recorded December 21st dates, with snow falling 5% of the time (heaviest snowfall: 2"). The last decade has been 8.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 8.2°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Olathe, KS? Bring layers as temperatures can vary throughout the day.
Warming Trend
2.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 51° | 28° | 40° | — | — |
| 2024 | 37° | 17° | 27° | — | — |
| 2023warmest | 58° | 49° | 53° | 0.08" | — |
| 2022 | 36° | 21° | 29° | — | — |
| 2021 | 48° | 19° | 34° | — | — |
| 2020 | 59° | 38° | 48° | — | — |
| 2019 | 48° | 29° | 39° | — | — |
| 2018 | 46° | 27° | 37° | — | — |
| 2017 | 53° | 34° | 43° | — | — |
| 2016 | 48° | 22° | 35° | — | — |
| 2015 | 57° | 30° | 44° | — | — |
| 2014 | 45° | 34° | 39° | — | — |
| 2013 | 28° | 20° | 24° | 0.81" | — |
| 2012 | 37° | 18° | 28° | — | — |
| 2011 | 47° | 30° | 39° | — | — |
| 2010 | 47° | 25° | 36° | — | — |
| 2009 | 44° | 22° | 33° | — | — |
| 2008 | 26° | 1° | 14° | — | — |
| 2007 | 52° | 29° | 40° | — | — |
| 2006 | 50° | 39° | 45° | 2.59" | — |
| 2005 | 31° | 24° | 27° | — | — |
| 2004 | 51° | 24° | 38° | — | — |
| 2003 | 53° | 30° | 42° | — | — |
| 2002 | 49° | 26° | 37° | — | — |
| 2001 | 54° | 31° | 42° | — | — |
| 2000 | 25° | 6° | 15° | — | — |
| 1999 | 23° | 11° | 17° | — | — |
| 1998 | 22° | 10° | 16° | 0.08" | — |
| 1997 | 34° | 28° | 31° | — | — |
| 1996 | 45° | 32° | 38° | — | — |
| 1995 | 32° | 29° | 30° | — | — |
| 1994 | 41° | 35° | 38° | 0.13" | — |
| 1993 | 44° | 25° | 34° | — | — |
| 1992 | 46° | 28° | 37° | — | — |
| 1991 | 39° | 33° | 36° | 0.58" | — |
| 1990 | 12° | 0° | 6° | 0.08" | 0.3" |
| 1989 | 17° | -11° | 3° | 0.03" | 0.5" |
| 1988 | 57° | 25° | 41° | — | — |
| 1987 | 43° | 26° | 34° | — | — |
| 1986 | 39° | 32° | 36° | — | — |
| 1985 | 36° | 4° | 20° | — | — |
| 1984 | 52° | 31° | 41° | 1.52" | — |
| 1983coldest | 10° | -4° | 3° | 0.36" | 2" |
| 1982 | 53° | 28° | 41° | — | — |
| 1981 | 35° | 31° | 33° | — | — |
| 1980 | 27° | 9° | 18° | — | — |
| 1979 | 58° | 31° | 44° | — | — |
| 1978 | 46° | 21° | 34° | — | — |
| 1977 | 29° | 16° | 22° | — | — |
| 1976 | 29° | 5° | 17° | — | — |
| 1975 | 34° | 15° | 24° | — | — |
| 1974 | 42° | 24° | 33° | — | — |
| 1973 | 30° | 12° | 21° | — | — |
| 1972 | 37° | 29° | 33° | — | — |
| 1971 | 32° | 29° | 30° | — | — |
55 years of data from OLATHE 3E