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Chicago in May: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Chicago in May will be like? Take a look at our weather guide for Chicago, based on historical data.
Check flight prices to Chicago on Avionero:
May

Weather in Chicago in May 2024

Good Weather
Mild
☁️
Cloudy
Are you considering a trip to Chicago in May? Well, the weather is usually on your side with an average maximum temperature of +66°F and about 4 sunny days. Just keep in mind that there may be some rain, with an average of 9 rainy days and 101 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.

Average weather

☀️
+66°F
Avg. max. temperature
+32°F
Min.
+97°F
Max.
101 mm
Total precipitation
64%
Avg. humidity
3 m/s
Avg. wind
4 ☀️
Sunny Days
18 ⛅️
Cloudy
9 🌦
Rainy
Our opinion: Chicago has good weather in May.

Average temperature in Chicago in May

Here are the expected maximum, average and minimum temperatures in Chicago for May based on the historical data.
Last Year
Historical Data

Going from a maximum of +93°F during the day to a minimum of +41°F during the night, the temperature in May averages around +73°F.

The average maximum temperature goes up 41% by the end of the month, compared with the beginning of the month, from +66°F to +88°F.

Is Chicago warm or cold in May?

Chicago is typically mild in May.

Maximum temperatures go up compared to the previous month from +54°F to +66°F. The minimum temperature also goes up from +41°F to +54°F.

Pack a light jacket as it will be warm in the day and cool in the evenings.

Take a look at how May is compared to other months in Chicago:

Climate in Chicago in May

Chicago weather looks like this, on average, in May and the surrounding months.
AprilMayJune
Avg. temperature
+54°F+66°F+77°F
Min. temperature
+18°F+32°F+43°F
Max. temperature
+86°F+97°F+100°F
Rainfall
92 mm101 mm92 mm
Wind
4 m/s3 m/s3 m/s
Humidity
64%64%65%
Air pressure
1013 HPa1013 HPa1013 HPa
Sunny days
445
Cloudy days
171817
Rainy days
898
Snowy days
100

May often has better weather than April. It’s getting warmer as May arrives. The average maximum temperature goes up from +54°F to +66°F during the day. Prepare for more rain. Average rainfall goes from 92 mm to 101 mm. Humidity levels don’t change as the month goes on, averaging around 64%. Winds are calmer in comparison to April, going down from 4 m/s to 3 m/s on average. The amount of sunny days stay about the same, averaging 4 sunny days during the month.

June brings much the same weather, it remains good.

Wind

Wind speed in Chicago in May based on historical data.
Last Year
Historical Data

The average wind speed is 4 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Chicago is gradually increasing during May, going from 3 m/s to 5 m/s over the course of the month.

Rain

Amount of rainfall in mm during May in Chicago based on historical data.
Last Year
Historical Data
Total precipitation in May is about 164 mm, with a 48% chance of rain on a typical day. The maximum amount of rainfall per day is around 41 mm, which is moderate rain. May is a pretty wet month with over 15 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
May is one of the rainiest months in Chicago, here is a comparison with other months, total mm:
Chicago wettest month is May, where a typical day has a 29% chance of precipitation and 101 mm of rainfall per day. January, on the other hand, is the driest month with a mere 6% chance of precipitation and 21 mm of rainfall per day.

How was the weather last May in Chicago?

This is the weather in Chicago in May 2023:
1 May
☁️
+66°F
2 May
☁️
+54°F
3 May
🌧️
+52°F
4 May
☁️
+52°F
5 May
☁️
+50°F
6 May
🌧️
+50°F
7 May
☀️
+61°F
8 May
☀️
+64°F
9 May
☀️
+81°F
10 May
☁️
+90°F
11 May
☁️
+89°F
12 May
☁️
+94°F
13 May
☀️
+91°F
14 May
☁️
+86°F
15 May
☁️
+76°F
16 May
☀️
+78°F
17 May
☀️
+76°F
18 May
☁️
+59°F
19 May
☁️
+87°F
20 May
☁️
+87°F
21 May
🌧️
+68°F
22 May
☁️
+62°F
23 May
☁️
+59°F
24 May
☁️
+63°F
25 May
☁️
+80°F
26 May
🌧️
+79°F
27 May
🌧️
+75°F
28 May
☁️
+74°F
29 May
☁️
+85°F
30 May
☁️
+90°F
31 May
☁️
+88°F
In May 2023 Chicago had 6 sunny days, 20 cloudy days, and 5 rainy days. The average maximum temperature was +73°F, with an absolute maximum of +93°F and a minimum of +50°F. The average humidity was 64%, with a maximum of 95% and a minimum of 25%. The average wind speed was 4 m/s, with a maximum of 12 m/s and a minimum of 0 m/s.
Are you planning a trip in May?

Climate Change Over the Years

This is how Chicago climate has changed over the last 43 years.

The climate in Chicago in May has not changed that much over the last 43 years.

The average temperature was the lowest in 1983 (+64°F) and the highest in 2012 (+80°F). The driest year was 1992 with only 17 mm of rainfall, and the wettest year was 2020 with 419 mm.

FAQ

Frequently asked questions about the weather in Chicago in May:

Is May a good time to visit Chicago?

May is a really good time to go to Chicago. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Chicago.

Can you sunbathe in Chicago in May?

May has mild temperatures in Chicago. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!

Is Chicago rainy in May?

Chicago is often rainy in May. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Chicago in May?

Usually, it’s not very sunny in Chicago in May, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in USA

Check out the weather for other cities in USA.

Monthly weather in Chicago

Source of the data

For this page, we’ve looked at the typical weather in Chicago, based on historical hourly weather data from January 1, 1979, to December 31, 2022.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.