The temperatures in Cumming in September are comfortable with low of 18°C and and high up to 28°C.
You can expect about 3 to 8 days of rain in Cumming 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 Cumming in September 2025.
If you’re planning to visit Cumming in the near future, we highly recommend that you review the 14 day weather forecast for Cumming before you arrive.
Temperatures
28° / 18°
Rainy Days
6
Snowy Days
0
Dry Days
24
Rainfall
159
mm
Sun Hours
8.0
Hrs