Click on a day for an hourly weather forecast
The temperatures in Cortona in September are comfortable with low of 12°C and and high up to 24°C.
You can expect about 3 to 8 days of rain in Cortona 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 Cortona in September 2025.
If you’re planning to visit Cortona in the near future, we highly recommend that you review the 14 day weather forecast for Cortona before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 6° / 0° | 7 | 22 | 2 | 102 mm | Awful | Cortona in January |
| February | 8° / 1° | 7 | 18 | 3 | 121 mm | Awful | Cortona in February |
| March | 12° / 3° | 7 | 23 | 1 | 103 mm | Bad | Cortona in March |
| April | 17° / 6° | 7 | 23 | 0 | 106 mm | Ok | Cortona in April |
| May | 20° / 8° | 9 | 22 | 0 | 135 mm | Ok | Cortona in May |
| June | 26° / 13° | 7 | 24 | 0 | 94 mm | Good | Cortona in June |
| July | 30° / 16° | 4 | 27 | 0 | 51 mm | Good | Cortona in July |
| August | 30° / 16° | 3 | 28 | 0 | 46 mm | Good | Cortona in August |
| September | 24° / 12° | 4 | 26 | 0 | 83 mm | Perfect | Cortona in September |
| October | 17° / 8° | 5 | 26 | 0 | 96 mm | Good | Cortona in October |
| November | 12° / 5° | 7 | 22 | 0 | 142 mm | Bad | Cortona in November |
| December | 8° / 1° | 6 | 24 | 2 | 105 mm | Bad | Cortona in December |