Click on a day for an hourly weather forecast
The temperatures in State College in September are comfortable with low of 12°C and and high up to 23°C.
You can expect about 3 to 8 days of rain in State College 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 State College in September 2025.
If you’re planning to visit State College in the near future, we highly recommend that you review the 14 day weather forecast for State College before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -1° / -7° | 8 | 5 | 19 | 110 mm | Awful | State College in January |
| February | 1° / -6° | 7 | 5 | 17 | 121 mm | Awful | State College in February |
| March | 7° / -2° | 10 | 11 | 11 | 129 mm | Awful | State College in March |
| April | 13° / 4° | 10 | 16 | 4 | 154 mm | Awful | State College in April |
| May | 20° / 10° | 10 | 21 | 0 | 171 mm | Ok | State College in May |
| June | 25° / 13° | 8 | 22 | 0 | 142 mm | Good | State College in June |
| July | 28° / 16° | 9 | 22 | 0 | 162 mm | Good | State College in July |
| August | 27° / 15° | 7 | 24 | 0 | 128 mm | Good | State College in August |
| September | 23° / 12° | 6 | 24 | 0 | 138 mm | Perfect | State College in September |
| October | 16° / 7° | 6 | 24 | 1 | 133 mm | Good | State College in October |
| November | 8° / 1° | 7 | 16 | 7 | 94 mm | Awful | State College in November |
| December | 3° / -3° | 10 | 8 | 14 | 123 mm | Awful | State College in December |