Carol Stream Climate: Weather by Month and Best Time to Visit
Best months for Carol Stream: September, July, August, June.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -1°C | -8°C | 52 mm | 8 | – | – | 4.0 |
| February | 2°C | -6°C | 48 mm | 7 | – | – | 4.4 |
| March | 9°C | -1°C | 65 mm | 10 | – | – | 5.4 |
| April | 15°C | 4°C | 113 mm | 12 | – | – | 6.3 |
| May | 22°C | 11°C | 119 mm | 13 | – | – | 7.1 |
| June | 26°C | 16°C | 107 mm | 12 | – | – | 7.4 |
| July | 28°C | 19°C | 94 mm | 11 | – | – | 7.6 |
| August | 27°C | 17°C | 93 mm | 11 | – | – | 7.6 |
| September | 24°C | 13°C | 78 mm | 9 | – | – | 7.9 |
| October | 17°C | 7°C | 80 mm | 9 | – | – | 7.0 |
| November | 9°C | 1°C | 61 mm | 8 | – | – | 5.7 |
| December | 2°C | -5°C | 55 mm | 8 | – | – | 4.3 |