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The Weather in Chicago in May

Updated: March 8, 2024
 By Mel

This post is an overview of the May weather in Chicago, including snow and precipitation forecasts, as well as tips on how to dress and things to do. 

If you're going to be in town either just before or after this month, make sure to read our posts covering weather in April and June as well.


The temperatures reach between 66 °F and 74°F (19-23 °C), with an average high of 70 °F (21°C).

On the other end, the average low this month dips down to 48 °F (9°C).

What is the average temperature in May in Chicago

The temperatures climb steadily throughout the month, and by the end of May, the temperatures have reached to be 10 °F (5 °C) warmer.


During this month, the city often sees 3.7 inches (93 mm) of rain over the course of 12 rainy days.

The sun shines 58% of the day, with an average of 7 clear days.

How much does it rain in May in Chicago?

The humidity this month is down to an average of 64%, peaking at 77% in the mornings.

Seasonal Outlook - April to June 2024 Chicago

There is a 75% chance for normal to above normal temperatures with a 73% chance for normal to above normal rainfall.


May brings in very pleasant weather and tends to be the city's least humid month but you should still bring some light jackets and layers for evenings, especially earlier in the month. 

What to Wear in May in Chicago

Umbrellas and rain boots are a good idea for the rainy days you'll see in May.


Below are the top things to do in May in Chicago.

But, be sure to read our full post on what to do in Chicago in May, which includes free things to do, night and family-friendly activities and attractions, as well as our definitive post on the best things to do in Chicago.

And if you are planning on visiting many of Chicago's top attractions, then you should consider a tourist attraction discount pass.

These passes could save up to 55% of retail ticket prices to tours, attractions, and restaurants, not to mention saving you time waiting in ticket lines.

Top things to do this month:

  1. Watch the Memorial Day Parade
  2. Go to a Baseball Game
  3. Hear Gospel at the Gospel Music Festival
  4. Enjoy a Night of Theater or Comedy Show
  5. See the Fireworks at Navy Pier
  6. Go to a festival like MayFest or Mole de Mayo
  7. Catch a Concert 
  8. Attend BachFest
  9. Celebrate Cinco de Mayo
  10. Take a Free Walking Tour

Be sure to check out all the top things to do in May in our main post.

Written by Fred Pickhardt
Ocean Weather Services

About The Author


Mel loves to be a tourist in her own city. With a background in performing arts, tourism, and photography, giving tours and being a story-teller comes naturally to her. She loves traveling, food, and theatre. Mel splits her time between Chicago and Los Angeles (#theatrelife) and leads tours and manages both cities!
Updated: March 8th, 2024
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