The weather in Arlington in September is hot. The average temperatures are between 21°C and 31°C.
You can expect about 3 to 8 days of rain in Arlington 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 Arlington in September 2025.
If you’re planning to visit Arlington in the near future, we highly recommend that you review the 14 day weather forecast for Arlington before you arrive.
Temperatures
31° / 21°
Rainy Days
7
Snowy Days
0
Dry Days
23
Rainfall
187
mm
Sun Hours
10.4
Hrs
