Weather on September 12
Olathe, KS
55 Years of Data
Avg High
83°F
Avg Low
61°F
Warmest
1980
87°F avg
Coldest
2014
49°F avg
About This Date
September 12th in Olathe, KS typically brings warm fall weather, with average highs around 83°F and lows near 61°F. Over 55 years of records, the warmest September 12th was in 1980 (87°F average), while the coldest was 2014 (49°F) — a 38°F range across recorded history. Rain or other precipitation has occurred on about 24% of September 12th dates historically, with the wettest September 12th recording 6.1" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 12th in Olathe, KS? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 94° | 64° | 79° | — | — |
| 2024 | 87° | 67° | 77° | — | — |
| 2023 | 80° | 57° | 69° | — | — |
| 2022 | 84° | 52° | 68° | — | — |
| 2021 | 85° | 69° | 77° | — | — |
| 2020 | 76° | 61° | 68° | — | — |
| 2019 | 83° | 70° | 76° | 0.46" | — |
| 2018 | 78° | 58° | 68° | — | — |
| 2017 | 77° | 57° | 67° | — | — |
| 2016 | 82° | 60° | 71° | — | — |
| 2015 | 71° | 50° | 61° | — | — |
| 2014coldest | 54° | 44° | 49° | 0.03" | — |
| 2013 | 86° | 68° | 77° | 0.03" | — |
| 2012 | 85° | 65° | 75° | — | — |
| 2011 | 91° | 59° | 75° | — | — |
| 2010 | 84° | 57° | 71° | 0.03" | — |
| 2009 | 82° | 64° | 73° | — | — |
| 2008 | 73° | 68° | 71° | 3.07" | — |
| 2007 | 82° | 51° | 67° | — | — |
| 2006 | 78° | 58° | 68° | — | — |
| 2005 | 89° | 70° | 79° | — | — |
| 2004 | 83° | 60° | 71° | — | — |
| 2003 | 79° | 59° | 69° | — | — |
| 2002 | 79° | 59° | 69° | — | — |
| 2001 | 82° | 55° | 69° | — | — |
| 2000 | 98° | 60° | 79° | 0.94" | — |
| 1999 | 77° | 60° | 69° | 0.76" | — |
| 1998 | 91° | 58° | 74° | — | — |
| 1997 | 84° | 56° | 70° | — | — |
| 1996 | 76° | 55° | 65° | 0.69" | — |
| 1995 | 86° | 65° | 75° | 0.08" | — |
| 1994 | 87° | 65° | 76° | — | — |
| 1993 | 91° | 72° | 81° | — | — |
| 1992 | 79° | 55° | 67° | — | — |
| 1991 | 93° | 73° | 83° | — | — |
| 1990 | 90° | 65° | 77° | — | — |
| 1989 | 62° | 46° | 54° | — | — |
| 1988 | 97° | 65° | 81° | — | — |
| 1987 | 78° | 54° | 66° | — | — |
| 1986 | 80° | 53° | 67° | 0.18" | — |
| 1985 | 76° | 58° | 67° | — | — |
| 1984 | 95° | 71° | 83° | 0.08" | — |
| 1983 | 77° | 69° | 73° | — | — |
| 1982 | 87° | 68° | 78° | — | — |
| 1981 | 85° | 64° | 74° | — | — |
| 1980warmest | 97° | 77° | 87° | — | — |
| 1979 | 84° | 58° | 71° | — | — |
| 1978 | 89° | 72° | 80° | — | — |
| 1977 | 86° | 61° | 73° | 6.1" | — |
| 1976 | 87° | 60° | 74° | — | — |
| 1975 | 65° | 45° | 55° | 1.02" | — |
| 1974 | 77° | 54° | 65° | — | — |
| 1973 | 75° | 57° | 66° | — | — |
| 1972 | 90° | 69° | 79° | — | — |
| 1971 | 88° | 60° | 74° | — | — |
55 years of data from OLATHE 3E