The temperatures in Olathe in September are comfortable with low of 16°C and and high up to 27°C.
You can expect about 3 to 8 days of rain in Olathe during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Olathe in September 2025.
If you’re planning to visit Olathe in the near future, we highly recommend that you review the 14 day weather forecast for Olathe before you arrive.
Temperatures
27° / 16°
Rainy Days
6
Snowy Days
0
Dry Days
24
Rainfall
132
mm
Sun Hours
10.7
Hrs
