Click on a day for an hourly weather forecast
The weather in Plainfield in August is hot. The average temperatures are between 20°C and 29°C.
You can expect rain for roughly half of the month of August in Plainfield. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Plainfield in August 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 |