Coralville Climate: Weather by Month and Best Time to Visit
Best months for Coralville: September, July, August.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -1°C | -10°C | 38 mm | 7 | – | – | 4.1 |
| February | 1°C | -7°C | 46 mm | 7 | – | – | 4.3 |
| March | 9°C | -1°C | 69 mm | 9 | – | – | 5.5 |
| April | 17°C | 5°C | 110 mm | 11 | – | – | 6.6 |
| May | 22°C | 11°C | 123 mm | 13 | – | – | 7.1 |
| June | 27°C | 17°C | 128 mm | 12 | – | – | 7.2 |
| July | 29°C | 19°C | 95 mm | 9 | – | – | 7.8 |
| August | 28°C | 18°C | 96 mm | 9 | – | – | 7.8 |
| September | 24°C | 13°C | 99 mm | 8 | – | – | 7.9 |
| October | 17°C | 7°C | 75 mm | 9 | – | – | 7.2 |
| November | 9°C | 0°C | 59 mm | 8 | – | – | 5.8 |
| December | 2°C | -6°C | 49 mm | 7 | – | – | 4.3 |