Click on a day for an hourly weather forecast
The temperatures in Plainfield in September are comfortable with low of 16°C and and high up to 25°C.
You can expect about 3 to 8 days of rain in Plainfield 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 Plainfield in September 2025.
If you’re planning to visit Plainfield in the near future, we highly recommend that you review the 14 day weather forecast for Plainfield before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / -4° | 7 | 21 | 3 | 88 mm | Awful | Plainfield in January |
| February | 5° / -3° | 7 | 17 | 4 | 95 mm | Awful | Plainfield in February |
| March | 9° / 1° | 8 | 21 | 2 | 119 mm | Awful | Plainfield in March |
| April | 16° / 6° | 7 | 23 | 0 | 114 mm | Ok | Plainfield in April |
| May | 21° / 12° | 9 | 22 | 0 | 113 mm | Ok | Plainfield in May |
| June | 26° / 17° | 9 | 21 | 0 | 125 mm | Good | Plainfield in June |
| July | 30° / 21° | 11 | 21 | 0 | 132 mm | Ok | Plainfield in July |
| August | 29° / 20° | 9 | 22 | 0 | 128 mm | Ok | Plainfield in August |
| September | 25° / 16° | 7 | 23 | 0 | 107 mm | Good | Plainfield in September |
| October | 18° / 11° | 7 | 24 | 0 | 136 mm | Ok | Plainfield in October |
| November | 12° / 4° | 6 | 24 | 0 | 87 mm | Ok | Plainfield in November |
| December | 6° / 0° | 8 | 22 | 2 | 129 mm | Awful | Plainfield in December |