Weather on August 20
Olathe, KS
55 Years of Data
Avg High
87°F
Avg Low
66°F
Warmest
2003
89°F avg
Coldest
2004
62°F avg
About This Date
August 20th in Olathe, KS typically brings warm summer weather, with average highs around 87°F and lows near 66°F. Over 55 years of records, the warmest August 20th was in 2003 (89°F average), while the coldest was 2004 (62°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 31% of August 20th dates historically, with the wettest August 20th recording 4.29" of rain. The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
Planning for August 20th in Olathe, KS? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 90° | 73° | 81° | — | — |
| 2024 | 79° | 63° | 71° | — | — |
| 2023 | 101° | 78° | 89° | — | — |
| 2022 | 86° | 65° | 75° | — | — |
| 2021 | 86° | 68° | 77° | 4.11" | — |
| 2020 | 84° | 57° | 71° | — | — |
| 2019 | 91° | 76° | 83° | — | — |
| 2018 | 71° | 65° | 68° | 0.2" | — |
| 2017 | 87° | 69° | 78° | — | — |
| 2016 | 76° | 60° | 68° | — | — |
| 2015 | 81° | 52° | 66° | — | — |
| 2014 | 93° | 72° | 82° | — | — |
| 2013 | 87° | 65° | 76° | — | — |
| 2012 | 87° | 54° | 70° | — | — |
| 2011 | 80° | 64° | 72° | 4.11" | — |
| 2010 | 95° | 69° | 82° | 0.18" | — |
| 2009 | 80° | 61° | 70° | 3.25" | — |
| 2008 | 81° | 61° | 71° | — | — |
| 2007 | 87° | 71° | 79° | 0.18" | — |
| 2006 | 85° | 68° | 76° | — | — |
| 2005 | 95° | 68° | 82° | 4.29" | — |
| 2004coldest | 68° | 56° | 62° | 0.33" | — |
| 2003warmest | 102° | 76° | 89° | — | — |
| 2002 | 81° | 69° | 75° | — | — |
| 2001 | 88° | 64° | 76° | — | — |
| 2000 | 94° | 68° | 81° | 0.05" | — |
| 1999 | 82° | 62° | 72° | — | — |
| 1998 | 92° | 74° | 83° | — | — |
| 1997 | 82° | 66° | 74° | 0.41" | — |
| 1996 | 88° | 67° | 77° | 1.14" | — |
| 1995 | 88° | 65° | 76° | — | — |
| 1994 | 80° | 63° | 71° | 0.66" | — |
| 1993 | 86° | 71° | 79° | — | — |
| 1992 | 82° | 56° | 69° | — | — |
| 1991 | 86° | 54° | 70° | — | — |
| 1990 | 84° | 69° | 77° | 0.03" | — |
| 1989 | 82° | 68° | 75° | 0.71" | — |
| 1988 | 93° | 70° | 81° | — | — |
| 1987 | 90° | 65° | 77° | 2.03" | — |
| 1986 | 86° | 65° | 75° | — | — |
| 1985 | 73° | 60° | 67° | 0.13" | — |
| 1984 | 87° | 61° | 74° | — | — |
| 1983 | 96° | 69° | 83° | — | — |
| 1982 | 85° | 70° | 77° | — | — |
| 1981 | 78° | 56° | 67° | — | — |
| 1980 | 92° | 74° | 83° | — | — |
| 1979 | 90° | 67° | 78° | — | — |
| 1978 | 84° | 57° | 71° | — | — |
| 1977 | 84° | 63° | 73° | — | — |
| 1976 | 92° | 62° | 77° | — | — |
| 1975 | 95° | 71° | 83° | — | — |
| 1974 | 90° | 66° | 78° | 1.45" | — |
| 1973 | 91° | 70° | 80° | — | — |
| 1972 | 95° | 71° | 83° | — | — |
| 1971 | 91° | 71° | 81° | — | — |
55 years of data from OLATHE 3E