The best time to visit Chicago
Month-by-month climate averages for Chicago, IL, so you can pick your dates on data rather than guesswork.
The most comfortable time to visit Chicago is usually May, September and October, when daytime highs sit in the pleasant 60-78°F range and the heaviest July rain is behind you.
Chicago is warmest in July (highs near 80°F) and coldest in January (lows around 23°F), with roughly 45 inches of precipitation across the year and July the wettest month. The sweet spot for most visitors is May, September and October. Expect overnight frost in January, February and December.
These are long-run averages. For the actual days you are travelling, check the live Chicago forecast — and note how much the models agree, because that tells you how much to trust it.
Chicago weather by month
what to expect in Chicago through the yearHere is Chicago's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Chicago by season.