Click on a day for an hourly weather forecast
The temperatures in Atlantic City in September are comfortable with low of 19°C and and high up to 24°C.
You can expect about 3 to 8 days of rain in Atlantic City 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 Atlantic City in September 2025.
If you’re planning to visit Atlantic City in the near future, we highly recommend that you review the 14 day weather forecast for Atlantic City before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / 0° | 5 | 20 | 6 | 55 mm | Awful | Atlantic City in January |
| February | 5° / 0° | 6 | 17 | 5 | 74 mm | Awful | Atlantic City in February |
| March | 8° / 4° | 7 | 22 | 3 | 75 mm | Awful | Atlantic City in March |
| April | 13° / 8° | 5 | 25 | 0 | 60 mm | Ok | Atlantic City in April |
| May | 18° / 14° | 5 | 26 | 0 | 76 mm | Good | Atlantic City in May |
| June | 23° / 19° | 4 | 26 | 0 | 74 mm | Perfect | Atlantic City in June |
| July | 27° / 22° | 5 | 26 | 0 | 89 mm | Perfect | Atlantic City in July |
| August | 27° / 22° | 4 | 27 | 0 | 102 mm | Perfect | Atlantic City in August |
| September | 24° / 19° | 4 | 26 | 0 | 75 mm | Perfect | Atlantic City in September |
| October | 18° / 14° | 5 | 26 | 0 | 88 mm | Good | Atlantic City in October |
| November | 12° / 8° | 4 | 25 | 1 | 54 mm | Ok | Atlantic City in November |
| December | 8° / 4° | 6 | 22 | 3 | 83 mm | Bad | Atlantic City in December |