Click on a day for an hourly weather forecast
The temperatures in Champaign in May are comfortable with low of 13°C and and high up to 22°C.
You can expect rain for roughly half of the month of May in Champaign. 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 Champaign in May 2025.
If you’re planning to visit Champaign in the near future, we highly recommend that you review the 14 day weather forecast for Champaign before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 0° / -6° | 6 | 13 | 12 | 60 mm | Awful | Champaign in January |
| February | 2° / -5° | 4 | 14 | 11 | 61 mm | Awful | Champaign in February |
| March | 10° / 2° | 7 | 20 | 5 | 84 mm | Awful | Champaign in March |
| April | 16° / 7° | 7 | 21 | 2 | 118 mm | Bad | Champaign in April |
| May | 22° / 13° | 8 | 23 | 0 | 127 mm | Ok | Champaign in May |
| June | 27° / 18° | 7 | 23 | 0 | 127 mm | Good | Champaign in June |
| July | 27° / 19° | 6 | 25 | 0 | 104 mm | Perfect | Champaign in July |
| August | 27° / 18° | 5 | 26 | 0 | 93 mm | Perfect | Champaign in August |
| September | 25° / 15° | 4 | 26 | 0 | 71 mm | Perfect | Champaign in September |
| October | 17° / 9° | 5 | 26 | 0 | 93 mm | Good | Champaign in October |
| November | 10° / 3° | 5 | 22 | 3 | 69 mm | Bad | Champaign in November |
| December | 4° / -2° | 5 | 18 | 8 | 61 mm | Awful | Champaign in December |