Click on a day for an hourly weather forecast
The temperatures in Rockford in May are usually low and can range between 10°C and 20°C.
You can expect about 3 to 8 days of rain in Rockford during the month of May. 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 Rockford in May 2025.
If you’re planning to visit Rockford in the near future, we highly recommend that you review the 14 day weather forecast for Rockford before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -4° / -10° | 4 | 13 | 15 | 30 mm | Awful | Rockford in January |
| February | -2° / -9° | 3 | 13 | 13 | 33 mm | Awful | Rockford in February |
| March | 7° / -1° | 6 | 19 | 6 | 43 mm | Bad | Rockford in March |
| April | 13° / 4° | 6 | 21 | 3 | 68 mm | Bad | Rockford in April |
| May | 20° / 10° | 7 | 24 | 0 | 92 mm | Ok | Rockford in May |
| June | 25° / 15° | 6 | 24 | 0 | 99 mm | Perfect | Rockford in June |
| July | 26° / 17° | 5 | 26 | 0 | 76 mm | Perfect | Rockford in July |
| August | 26° / 16° | 5 | 26 | 0 | 66 mm | Perfect | Rockford in August |
| September | 23° / 12° | 3 | 27 | 0 | 44 mm | Perfect | Rockford in September |
| October | 15° / 7° | 4 | 26 | 1 | 54 mm | Good | Rockford in October |
| November | 7° / 0° | 4 | 22 | 4 | 34 mm | Bad | Rockford in November |
| December | 1° / -5° | 5 | 15 | 11 | 32 mm | Awful | Rockford in December |