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Chicago weather in May

Long-run climate averages for Chicago, IL in May, plus what the forecast models say for the days ahead.

May at a glance

In May, Chicago averages 68°F by day and 51°F at night. The wettest month is usually July.

May in Chicago averages a daytime high of 68°F and an overnight low of 51°F, which reads as mild for this part of the world. Across the whole year Chicago sees roughly 45 inches of precipitation.

Climate averages tell you what to pack. They do not tell you what next Tuesday looks like — for that, see the live Chicago forecast with every model compared and how much they currently agree.

Chicago weather by month

what to expect in Chicago through the year

Here 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.

Jan
34°
23°
Cold
Feb
43°
27°
Cool
Mar
47°
32°
Cool
Apr
59°
41°
Mild
May
68°
51°
Mild
Jun
79°
62°
Warm
Jul
80°
65°
Warm
Wettest
Aug
80°
65°
Warm
Sep
75°
61°
Warm
Oct
64°
49°
Mild
Nov
50°
38°
Cool
Dec
40°
30°
Cool

Common questions

How warm is Chicago in May?
Chicago averages a daytime high of 68°F in May, with overnight lows around 51°F. These are long-run climate averages, not a forecast — for the actual days ahead see the live model comparison.
Is May a good time to visit Chicago?
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.
Does it rain a lot in Chicago in May?
The wettest month in Chicago is usually July. Across the year the city sees roughly 45 inches of precipitation.

Chicago in other months

JanuaryFebruaryMarchAprilJuneJulyAugustSeptemberOctoberNovemberDecember

More about Chicago

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