Click on a day for an hourly weather forecast
The temperatures in Aalen in September are usually low and can range between 10°C and 19°C.
You can expect about 3 to 8 days of rain in Aalen 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 Aalen in September 2026.
If you’re planning to visit Aalen in the near future, we highly recommend that you review the 14 day weather forecast for Aalen before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 2° / -3° | 8 | 7 | 16 | 109 mm | Awful | Aalen in January |
| February | 4° / -2° | 6 | 10 | 12 | 80 mm | Awful | Aalen in February |
| March | 9° / 1° | 7 | 17 | 7 | 77 mm | Awful | Aalen in March |
| April | 14° / 4° | 7 | 20 | 3 | 69 mm | Bad | Aalen in April |
| May | 17° / 7° | 10 | 21 | 0 | 163 mm | Ok | Aalen in May |
| June | 21° / 11° | 9 | 21 | 0 | 156 mm | Ok | Aalen in June |
| July | 23° / 13° | 8 | 23 | 0 | 149 mm | Good | Aalen in July |
| August | 23° / 13° | 8 | 23 | 0 | 142 mm | Good | Aalen in August |
| September | 19° / 10° | 6 | 24 | 0 | 91 mm | Good | Aalen in September |
| October | 13° / 6° | 7 | 24 | 1 | 86 mm | Bad | Aalen in October |
| November | 8° / 2° | 8 | 17 | 5 | 93 mm | Awful | Aalen in November |
| December | 4° / -1° | 10 | 9 | 13 | 119 mm | Awful | Aalen in December |