Cheap flights to Waterloo, IA (ALO)

If you're looking for summer vibes, the best time to travel to Waterloo, IA is in July, August and June, when the average temperature reaches 28º, while January, December and October are the 3 sunniest months of the year, with an average of 23 hours. However, if you prefer colder temperatures, make sure you visit Waterloo, IA during January, December or February to experience an average of -11º. For those who don't care too much about temperatures, but want to avoid getting wet in the rain, it's important to avoid travelling during June, July and May, when the average precipitation in Waterloo, IA is 122mm, while the months of January, February and December are drier, with an average of 26mm.