Click on a day for an hourly weather forecast
The temperatures in Aargau in September are quite cold with temperatures between 8°C and 20°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Aargau 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 Aargau in September 2024.
If you’re planning to visit Aargau in the near future, we highly recommend that you review the 14 day weather forecast for Aargau before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / -4° | 9 | 10 | 12 | 135 mm | Awful | Aargau in January |
| February | 5° / -4° | 8 | 9 | 12 | 106 mm | Awful | Aargau in February |
| March | 10° / -1° | 7 | 17 | 7 | 101 mm | Awful | Aargau in March |
| April | 15° / 2° | 7 | 21 | 2 | 110 mm | Bad | Aargau in April |
| May | 18° / 5° | 11 | 19 | 0 | 213 mm | Ok | Aargau in May |
| June | 22° / 9° | 12 | 18 | 0 | 221 mm | Ok | Aargau in June |
| July | 24° / 11° | 10 | 21 | 0 | 216 mm | Good | Aargau in July |
| August | 24° / 11° | 9 | 22 | 0 | 180 mm | Good | Aargau in August |
| September | 20° / 8° | 5 | 25 | 0 | 109 mm | Good | Aargau in September |
| October | 15° / 4° | 6 | 24 | 0 | 120 mm | Good | Aargau in October |
| November | 9° / 1° | 7 | 18 | 5 | 122 mm | Awful | Aargau in November |
| December | 5° / -3° | 10 | 12 | 10 | 151 mm | Awful | Aargau in December |