What’s the climate like in Chicago?
The current climate of Chicago features average monthly temperatures ranging from highs of 29°C during the day to lows of 1°C. 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.
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.
On average, Chicago gets 981 mm of precipitation each year. Of this, about 40 cm is snowfall. For comparison, London gets 701 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 good 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.
Climate Table of Chicago
The climate table of Chicago shows the average temperatures, precipitation, snow, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation 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.
- Average yearly temperature: 17°C
- Highest temperature: 29°C in July and August
- Lowest temperature: 1°C in January
- Precipitation*: 981 mm per year, averaging 82 mm per month
- Snowfall: 40 cm per year
- Driest months: 35 mm in January, 44 mm in November and 50 mm in December
- Wettest months: 169 mm in July, 112 mm in May and 111 mm in October
*Precipitation is measured as a combination of rain, snow, and hail
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Table of Contents
Average Temperature per Month in Chicago
This graph shows the average maximum temperatures per month in Chicago, Illinois. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Chicago
This graph shows how much precipitation Chicago, Illinois, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average Snowfall per Month in Chicago
This graph shows how much snow Chicago, Illinois, gets on average per month. The amount of snowfall is measured in centimetres and the average is calculated based on the recorded snowfall per month from past years.
Average UV Index per Month in Chicago
This graph 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.
Yearly Temperature in Chicago
This graph shows the average yearly temperature in Chicago, Illinois. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Chicago
This chart shows the total yearly precipitation in Chicago, Illinois, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Total Yearly Snowfall in Chicago
This chart shows the total yearly snowfall in Chicago, Illinois, over the past few years. The total yearly snowfall, measured in centimetres, is the sum of all the snow that fell in the twelve months of that year.
Weather experiences in Chicago
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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.
