Click on a day for an hourly weather forecast
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.
Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
---|---|---|---|---|---|---|---|
January | 13° / 5° | 4 | 26 | 1 | 90 mm | Ok | Arlington in January |
February | 14° / 6° | 5 | 21 | 2 | 93 mm | Ok | Arlington in February |
March | 19° / 10° | 6 | 25 | 0 | 120 mm | Good | Arlington in March |
April | 23° / 13° | 6 | 24 | 0 | 114 mm | Perfect | Arlington in April |
May | 27° / 18° | 9 | 23 | 0 | 201 mm | Good | Arlington in May |
June | 32° / 22° | 8 | 22 | 0 | 177 mm | Ok | Arlington in June |
July | 34° / 24° | 7 | 24 | 0 | 137 mm | Bad | Arlington in July |
August | 35° / 25° | 6 | 25 | 0 | 141 mm | Ok | Arlington in August |
September | 31° / 21° | 7 | 23 | 0 | 187 mm | Ok | Arlington in September |
October | 25° / 16° | 6 | 25 | 0 | 190 mm | Perfect | Arlington in October |
November | 19° / 10° | 4 | 25 | 0 | 100 mm | Good | Arlington in November |
December | 14° / 7° | 4 | 26 | 0 | 108 mm | Good | Arlington in December |