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United StatesThe climate of Chicago
The current climate in Chicago features temperatures ranging from a high of 29°C to a low of 1°C throughout the year. The average yearly temperature is around 17°C. At night, temperatures in the colder months average around -7°C and in the warmer months around 20°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Chicago, Illinois.
Temperature records
The highest temperature recorded in Chicago in recent years was 38°C in June 2022. The lowest daytime temperature recorded was -23°C in January 2019.
Precipitation and snowfall
On average, Chicago gets 981 mm of precipitation each year. Of this, about 40 cm is snowfall. For comparison, New York gets 1142 mm of precipitation each year.
Best time to visit Chicago?
The best time to visit Chicago for sunny weather is May, June and August through October. During this period, you'll have nice temperatures and not too much rain, making it a great time to visit Chicago. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
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Climate Table of Chicago
The climate table of Chicago shows the average temperatures, rainfall, snow, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 1 | 2 | 9 | 15 | 22 | 28 | 29 | 29 | 26 | 18 | 10 | 5 |
| Temp. min (°C) | -6 | -6 | 1 | 6 | 12 | 18 | 21 | 20 | 17 | 10 | 2 | -1 |
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| Precipitation (mm) | 35 | 56 | 56 | 81 | 112 | 109 | 169 | 87 | 71 | 111 | 44 | 50 |
| Snow (cm) | 13 | 13 | 3,3 | 0,8 | 0 | 0 | 0 | 0 | 0 | 0,2 | 1,4 | 6,9 |
| UV Index | 2 | 3 | 4 | 5 | 4 | 5 | 6 | 5 | 4 | 3 | 2 | 2 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
Temperature charts
These charts display the average temperatures in Chicago, Illinois. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Chicago
Yearly Temperature in Chicago
Precipitation charts
These charts show the average amount of precipitation in Chicago, Illinois. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Chicago
Total Yearly Precipitation in Chicago
Average Snowfall per Month in Chicago
Total Yearly Snowfall in Chicago
UV index chart
This chart shows the average UV index per month in Chicago, Illinois. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Chicago
Weather experiences in Chicago
The weather in Chicago is rated 5 out of 5 stars by 1 visitor.
Bafi van Rest
I have lived in Chicago, sometimes in January it can be minus 15 c with a felt temperature of minus 25 c because of the wind from lake Michigan..so make sure you have warm clothes with you
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Average weather in Chicago by month
Click on a month below to see detailed weather info for Chicago. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.