Weather on April 21
Olathe, KS
55 Years of Data
Avg High
67°F
Avg Low
47°F
Warmest
1985
73°F avg
Coldest
1992
36°F avg
About This Date
April 21st in Olathe, KS typically brings mild spring weather, with average highs around 67°F and lows near 47°F. Over 55 years of records, the warmest April 21st was in 1985 (73°F average), while the coldest was 1992 (36°F) — a 37°F range across recorded history. Rain or other precipitation has occurred on about 33% of April 21st dates historically, with the wettest April 21st recording 7.01" of rain. The last decade has been 5.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 5.9°F cooler on this date compared to 20-30 years ago.
Planning for April 21st in Olathe, KS? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 69° | 47° | 58° | — | — |
| 2024 | 59° | 38° | 48° | — | — |
| 2023 | 60° | 43° | 51° | — | — |
| 2022 | 77° | 45° | 61° | 0.23" | — |
| 2021 | 47° | 31° | 39° | — | — |
| 2020 | 71° | 46° | 59° | — | — |
| 2019 | 82° | 56° | 69° | — | — |
| 2018 | 64° | 48° | 56° | — | — |
| 2017 | 54° | 47° | 50° | — | — |
| 2016 | 65° | 50° | 57° | — | — |
| 2015 | 69° | 42° | 56° | — | — |
| 2014 | 72° | 59° | 65° | 0.05" | — |
| 2013 | 65° | 46° | 55° | — | — |
| 2012 | 68° | 35° | 52° | — | — |
| 2011 | 59° | 44° | 52° | 0.1" | — |
| 2010 | 70° | 53° | 61° | — | — |
| 2009 | 65° | 44° | 54° | — | — |
| 2008 | 77° | 48° | 63° | — | — |
| 2007 | 77° | 52° | 64° | — | — |
| 2006 | 73° | 48° | 61° | — | — |
| 2005 | 78° | 62° | 70° | — | — |
| 2004 | 72° | 50° | 61° | 1.73" | — |
| 2003 | 67° | 46° | 56° | — | — |
| 2002 | 59° | 49° | 54° | 5.26" | — |
| 2001 | 78° | 68° | 73° | — | — |
| 2000 | 67° | 39° | 53° | 0.36" | — |
| 1999 | 75° | 63° | 69° | — | — |
| 1998 | 66° | 43° | 54° | — | — |
| 1997 | 59° | 48° | 54° | — | — |
| 1996 | 76° | 50° | 63° | — | — |
| 1995 | 55° | 39° | 47° | — | — |
| 1994 | 69° | 50° | 60° | 0.43" | — |
| 1993 | 59° | 37° | 48° | — | — |
| 1992coldest | 39° | 34° | 36° | 3.15" | — |
| 1991 | 57° | 39° | 48° | — | — |
| 1990 | 77° | 46° | 62° | — | — |
| 1989 | 85° | 54° | 69° | — | — |
| 1988 | 78° | 52° | 65° | — | — |
| 1987 | 78° | 50° | 64° | 1.14" | — |
| 1986 | 51° | 39° | 45° | 0.05" | — |
| 1985warmest | 82° | 65° | 73° | — | — |
| 1984 | 52° | 43° | 47° | 2.26" | — |
| 1983 | 55° | 38° | 46° | — | — |
| 1982 | 57° | 32° | 45° | — | — |
| 1981 | 60° | 45° | 52° | — | — |
| 1980 | 88° | 53° | 70° | — | — |
| 1979 | 66° | 43° | 54° | 1.3" | — |
| 1978 | 57° | 30° | 44° | — | — |
| 1977 | 64° | 53° | 59° | 1.63" | — |
| 1976 | 67° | 48° | 57° | 0.25" | — |
| 1975 | 73° | 48° | 61° | — | — |
| 1974 | 72° | 62° | 67° | 2.41" | — |
| 1973 | 79° | 62° | 70° | 1.12" | — |
| 1972 | 59° | 49° | 54° | 7.01" | — |
| 1971 | 78° | 52° | 65° | 0.46" | — |
55 years of data from OLATHE 3E