Weather on May 21
Olathe, KS
55 Years of Data
Avg High
76°F
Avg Low
56°F
Warmest
2004
79°F avg
Coldest
2003
55°F avg
About This Date
May 21st in Olathe, KS typically brings pleasant spring weather, with average highs around 76°F and lows near 56°F. Over 55 years of records, the warmest May 21st was in 2004 (79°F average), while the coldest was 2003 (55°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 29% of May 21st dates historically, with the wettest May 21st recording 3.15" of rain. The last decade has been 3.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.0°F cooler on this date compared to 20-30 years ago.
Planning for May 21st in Olathe, KS? Great weather for outdoor activities.
Cooling Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 51° | 62° | — | — |
| 2024 | 83° | 61° | 72° | 0.3" | — |
| 2023 | 75° | 48° | 62° | — | — |
| 2022 | 63° | 48° | 55° | — | — |
| 2021 | 73° | 67° | 70° | 0.08" | — |
| 2020 | 73° | 59° | 66° | — | — |
| 2019 | 68° | 48° | 58° | 3.15" | — |
| 2018 | 74° | 58° | 66° | — | — |
| 2017 | 69° | 43° | 56° | — | — |
| 2016 | 73° | 49° | 61° | — | — |
| 2015 | 68° | 47° | 57° | 0.13" | — |
| 2014 | 85° | 66° | 75° | — | — |
| 2013 | 74° | 53° | 63° | — | — |
| 2012 | 75° | 53° | 64° | — | — |
| 2011 | 79° | 62° | 70° | 2.34" | — |
| 2010 | 72° | 57° | 64° | — | — |
| 2009 | 79° | 60° | 69° | — | — |
| 2008 | 74° | 52° | 63° | — | — |
| 2007 | 79° | 58° | 68° | — | — |
| 2006 | 75° | 59° | 67° | — | — |
| 2005 | 83° | 55° | 69° | — | — |
| 2004warmest | 88° | 71° | 79° | — | — |
| 2003coldest | 63° | 47° | 55° | — | — |
| 2002 | 69° | 45° | 57° | — | — |
| 2001 | 73° | 52° | 62° | 1.78" | — |
| 2000 | 77° | 55° | 66° | 0.71" | — |
| 1999 | 77° | 60° | 69° | 1.27" | — |
| 1998 | 82° | 68° | 75° | — | — |
| 1997 | 70° | 50° | 60° | — | — |
| 1996 | 79° | 53° | 66° | — | — |
| 1995 | 70° | 53° | 61° | 0.18" | — |
| 1994 | 80° | 57° | 69° | — | — |
| 1993 | 75° | 48° | 62° | — | — |
| 1992 | 83° | 65° | 74° | — | — |
| 1991 | 80° | 68° | 74° | 0.08" | — |
| 1990 | 66° | 53° | 60° | 0.08" | — |
| 1989 | 70° | 55° | 62° | — | — |
| 1988 | 74° | 62° | 68° | — | — |
| 1987 | 84° | 71° | 78° | — | — |
| 1986 | 73° | 52° | 62° | — | — |
| 1985 | 75° | 56° | 65° | — | — |
| 1984 | 79° | 54° | 66° | — | — |
| 1983 | 68° | 54° | 61° | 0.05" | — |
| 1982 | 72° | 56° | 64° | 1.19" | — |
| 1981 | 75° | 48° | 62° | — | — |
| 1980 | 76° | 53° | 64° | — | — |
| 1979 | 74° | 52° | 63° | 0.08" | — |
| 1978 | 68° | 55° | 62° | — | — |
| 1977 | 78° | 61° | 69° | 1.32" | — |
| 1976 | 80° | 60° | 70° | — | — |
| 1975 | 88° | 60° | 74° | — | — |
| 1974 | 85° | 69° | 77° | — | — |
| 1973 | 88° | 63° | 75° | — | — |
| 1972 | 87° | 62° | 75° | — | — |
| 1971 | 76° | 56° | 66° | 0.05" | — |
55 years of data from OLATHE 3E