September weather in Olathe, CO
The average temperature in Olathe in September is 63.2°F (47.9°F–78.6°F). Average precipitation: 1.17 inches.
September is a fall month in Olathe, and is warmer than the annual average of 50.3°F. Daily temperatures swing about 30.7°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 14m. For travel, September is a comfortable month to visit.
Avg High
78.6°F
Avg Low
47.9°F
Precipitation
1.17 in
Daylight
12h 14m
September records in Olathe
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.9°F (2019) | 45.0°F (2005) | 0.22 in (2021) |
| September 2 | 93.9°F (2019) | 44.1°F (2008) | 0.38 in (2016) |
| September 3 | 93.9°F (2022) | 46.9°F (2008) | 0.17 in (2005) |
| September 4 | 93.0°F (2017) | 43.0°F (2008) | 0.42 in (2004) |
| September 5 | 95.0°F (2020) | 36.0°F (2004) | 0.20 in (2003) |
| September 6 | 96.1°F (2022) | 41.0°F (2004) | 0.25 in (2003) |
| September 7 | 95.0°F (2022) | 42.1°F (2010) | 0.11 in (2006) |
| September 8 | 93.0°F (2022) | 37.0°F (2020) | 0.30 in (2002) |
| September 9 | 91.9°F (2021) | 33.1°F (2001) | 0.77 in (2003) |
| September 10 | 93.0°F (2021) | 37.9°F (2001) | 0.33 in (2003) |
| September 11 | 90.0°F (2021) | 37.0°F (2010) | 0.34 in (1998) |
| September 12 | 89.1°F (2001) | 39.9°F (2003) | 0.38 in (1998) |
| September 13 | 89.1°F (2007) | 39.0°F (2008) | 0.35 in (2009) |
| September 14 | 91.9°F (2000) | 33.1°F (2003) | 0.47 in (2017) |
| September 15 | 91.9°F (2000) | 37.0°F (2003) | 0.19 in (2011) |
| September 16 | 91.9°F (2000) | 36.0°F (2006) | 0.65 in (2007) |
| September 17 | 89.1°F (2018) | 30.2°F (2006) | 0.31 in (2001) |
| September 18 | 90.0°F (2010) | 32.0°F (2003) | 0.48 in (2000) |
| September 19 | 91.0°F (2010) | 30.9°F (1996) | 0.68 in (1999) |
| September 20 | 86.0°F (2014) | 37.0°F (1996) | 0.47 in (2004) |
| September 21 | 86.0°F (2010) | 37.0°F (2009) | 0.76 in (2004) |
| September 22 | 84.9°F (2012) | 32.0°F (2009) | 0.89 in (2013) |
| September 23 | 84.9°F (2001) | 35.1°F (2004) | 0.38 in (2017) |
| September 24 | 87.1°F (2001) | 34.0°F (2006) | 0.18 in (2012) |
| September 25 | 88.0°F (2020) | 30.0°F (2000) | 0.07 in (2012) |
| September 26 | 87.1°F (2015) | 33.1°F (2017) | 0.29 in (2012) |
| September 27 | 87.1°F (2001) | 28.9°F (1996) | 0.13 in (2013) |
| September 28 | 87.1°F (2009) | 28.9°F (1999) | 0.66 in (2014) |
| September 29 | 87.1°F (2024) | 25.0°F (1999) | 0.55 in (2021) |
| September 30 | 88.0°F (2010) | 28.2°F (2007) | 0.25 in (2022) |