The weather in Oklahoma City in September is hot. The average temperatures are between 66°F and 86°F. Usually the days in September are hot while the nights are a bit cooler.
You can expect about 3 to 8 days of rain in Oklahoma City 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 Oklahoma City in September 2025.
If you’re planning to visit Oklahoma City in the near future, we highly recommend that you review the 14 day weather forecast for Oklahoma City before you arrive.
Temperatures
86° / 66°
Rainy Days
6
Snowy Days
0
Dry Days
24
Rainfall
5.71
in
Sun Hours
10.8
Hrs
