Click on a day for an hourly weather forecast
The temperatures in Bloomington in September are comfortable with low of 12°C and and high up to 22°C.
You can expect about 3 to 8 days of rain in Bloomington 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 Bloomington in September 2025.
If you’re planning to visit Bloomington in the near future, we highly recommend that you review the 14 day weather forecast for Bloomington before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -7° / -14° | 4 | 9 | 18 | 36 mm | Awful | Bloomington in January |
| February | -5° / -13° | 2 | 9 | 16 | 45 mm | Awful | Bloomington in February |
| March | 4° / -3° | 7 | 14 | 10 | 71 mm | Awful | Bloomington in March |
| April | 11° / 3° | 8 | 16 | 6 | 117 mm | Awful | Bloomington in April |
| May | 19° / 10° | 6 | 24 | 0 | 137 mm | Good | Bloomington in May |
| June | 25° / 15° | 8 | 22 | 0 | 194 mm | Good | Bloomington in June |
| July | 27° / 18° | 8 | 23 | 0 | 139 mm | Good | Bloomington in July |
| August | 26° / 16° | 7 | 24 | 0 | 120 mm | Good | Bloomington in August |
| September | 22° / 12° | 5 | 25 | 0 | 100 mm | Good | Bloomington in September |
| October | 13° / 6° | 5 | 24 | 2 | 80 mm | Bad | Bloomington in October |
| November | 5° / -1° | 4 | 18 | 8 | 60 mm | Awful | Bloomington in November |
| December | -3° / -9° | 4 | 11 | 17 | 56 mm | Awful | Bloomington in December |