Click on a day for an hourly weather forecast
The temperatures in Cary in September are comfortable with low of 18°C and and high up to 28°C.
You can expect about 3 to 8 days of rain in Cary 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 Cary in September 2025.
If you’re planning to visit Cary in the near future, we highly recommend that you review the 14 day weather forecast for Cary before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 9° / 1° | 6 | 22 | 3 | 114 mm | Bad | Cary in January |
| February | 11° / 3° | 7 | 19 | 3 | 117 mm | Awful | Cary in February |
| March | 15° / 6° | 8 | 22 | 1 | 124 mm | Ok | Cary in March |
| April | 21° / 11° | 6 | 24 | 0 | 122 mm | Good | Cary in April |
| May | 26° / 16° | 8 | 23 | 0 | 148 mm | Good | Cary in May |
| June | 30° / 20° | 6 | 24 | 0 | 140 mm | Good | Cary in June |
| July | 32° / 22° | 8 | 23 | 0 | 153 mm | Ok | Cary in July |
| August | 31° / 21° | 8 | 23 | 0 | 150 mm | Ok | Cary in August |
| September | 28° / 18° | 7 | 23 | 0 | 163 mm | Good | Cary in September |
| October | 22° / 13° | 4 | 27 | 0 | 97 mm | Good | Cary in October |
| November | 15° / 7° | 5 | 25 | 0 | 114 mm | Good | Cary in November |
| December | 12° / 4° | 6 | 24 | 1 | 118 mm | Ok | Cary in December |