The weather in Arkansas in September is hot. The average temperatures are between 18°C and 30°C. 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 Arkansas 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 Arkansas in September 2025.
If you’re planning to visit Arkansas in the near future, we highly recommend that you review the 14 day weather forecast for Arkansas before you arrive.
Temperatures
30° / 18°
Rainy Days
4
Snowy Days
0
Dry Days
26
Rainfall
90
mm
Sun Hours
10.7
Hrs
