Weather on September 11
Olathe, KS
55 Years of Data
Avg High
82°F
Avg Low
60°F
Warmest
2000
87°F avg
Coldest
2014
57°F avg
About This Date
September 11th in Olathe, KS typically brings warm fall weather, with average highs around 82°F and lows near 60°F. Over 55 years of records, the warmest September 11th was in 2000 (87°F average), while the coldest was 2014 (57°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 20% of September 11th dates historically, with the wettest September 11th recording 3.51" of rain. The last decade has been 4.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.1°F cooler on this date compared to 20-30 years ago.
Planning for September 11th in Olathe, KS? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 62° | 75° | — | — |
| 2024 | 88° | 54° | 71° | — | — |
| 2023 | 72° | 63° | 67° | 0.64" | — |
| 2022 | 76° | 54° | 65° | — | — |
| 2021 | 86° | 69° | 78° | — | — |
| 2020 | 62° | 54° | 58° | 0.15" | — |
| 2019 | 89° | 70° | 79° | — | — |
| 2018 | 79° | 58° | 68° | — | — |
| 2017 | 80° | 56° | 68° | — | — |
| 2016 | 74° | 52° | 63° | — | — |
| 2015 | 72° | 56° | 64° | — | — |
| 2014coldest | 60° | 53° | 57° | — | — |
| 2013 | 93° | 66° | 80° | — | — |
| 2012 | 87° | 56° | 71° | — | — |
| 2011 | 84° | 58° | 71° | 0.03" | — |
| 2010 | 79° | 60° | 69° | — | — |
| 2009 | 81° | 64° | 72° | — | — |
| 2008 | 73° | 50° | 62° | — | — |
| 2007 | 74° | 51° | 62° | — | — |
| 2006 | 74° | 63° | 68° | 0.51" | — |
| 2005 | 88° | 67° | 77° | — | — |
| 2004 | 83° | 60° | 71° | — | — |
| 2003 | 85° | 61° | 73° | — | — |
| 2002 | 90° | 59° | 74° | — | — |
| 2001 | 80° | 56° | 68° | — | — |
| 2000warmest | 101° | 74° | 87° | — | — |
| 1999 | 78° | 59° | 69° | — | — |
| 1998 | 91° | 58° | 74° | — | — |
| 1997 | 76° | 53° | 64° | — | — |
| 1996 | 87° | 64° | 76° | — | — |
| 1995 | 82° | 55° | 69° | — | — |
| 1994 | 82° | 60° | 71° | — | — |
| 1993 | 82° | 56° | 69° | 0.2" | — |
| 1992 | 75° | 50° | 63° | — | — |
| 1991 | 92° | 72° | 82° | 0.03" | — |
| 1990 | 87° | 67° | 77° | — | — |
| 1989 | 70° | 58° | 64° | — | — |
| 1988 | 92° | 62° | 77° | — | — |
| 1987 | 82° | 58° | 70° | 0.97" | — |
| 1986 | 75° | 62° | 69° | 3.51" | — |
| 1985 | 74° | 61° | 67° | — | — |
| 1984 | 91° | 64° | 78° | 0.03" | — |
| 1983 | 78° | 57° | 68° | 1.65" | — |
| 1982 | 86° | 67° | 76° | — | — |
| 1981 | 85° | 65° | 75° | — | — |
| 1980 | 88° | 56° | 72° | — | — |
| 1979 | 84° | 58° | 71° | — | — |
| 1978 | 84° | 70° | 77° | — | — |
| 1977 | 73° | 58° | 65° | — | — |
| 1976 | 86° | 52° | 69° | — | — |
| 1975 | 76° | 59° | 67° | 2.41" | — |
| 1974 | 82° | 66° | 74° | — | — |
| 1973 | 80° | 59° | 70° | — | — |
| 1972 | 90° | 68° | 79° | — | — |
| 1971 | 91° | 59° | 75° | — | — |
55 years of data from OLATHE 3E