Monthly Weather in Chicago, United States
What is the average monthly temperature in Chicago?
The average monthly temperature in Chicago, Illinois, United States ranges from 0.1°C (32.3°F) in January to 24.1°C (75.4°F) in July. Chicago temperature by month is given in the table below.
| Month | Celsius | Fahrenheit |
|---|---|---|
| January | 0.1°C | 32.2°F |
| February | 1.4°C | 34.5°F |
| March | 3.7°C | 38.7°F |
| April | 11.2°C | 52.2°F |
| May | 16.9°C | 62.4°F |
| June | 21.6°C | 70.9°F |
| July | 24.1°C | 75.4°F |
| August | 23.4°C | 74.1°F |
| September | 20.4°C | 68.7°F |
| October | 13.6°C | 56.5°F |
| November | 6.4°C | 43.5°F |
| December | 4.5°C | 40.1°F |
What is the hottest month in Chicago?
The hottest months in Chicago are July, August and June. During July the average temperature outside is 24.1°C (75.4°F), in August it is 23.4°C (74.1°F) and during June the air temperature is around 21.6°C (70.9°F).
What is the coldest month in Chicago?
The coldest months in Chicago are January, February and March. In January the average air temperature drops to 0.1°C (32.2°F), in February air temperature is 1.4°C (34.5°F) and during March it is 3.7°C (38.7°F).
How much does it rain on average in Chicago?
On average it rains for 12 month(s) in Chicago, United States with an average of 12.4 days of rain per month. In total Chicago has 149 rainy days in a year.
When does it rain the most in Chicago?
In Chicago it rains the most during the following months.
- July - on average 7.13mm (0.28 inches) of rainfall per day.
- February - on average 3.01mm (0.12 inches) of rainfall per day.
- September - on average 2.77mm (0.11 inches) of rainfall per day.
- October - on average 2.16mm (0.09 inches) of rainfall per day.
- December - on average 2.16mm (0.09 inches) of rainfall per day.
- March - on average 2.08mm (0.08 inches) of rainfall per day.
Does it snow in Chicago?
Yes, it snows in Chicago. The following months have the most amount of snow.
- January. Chicago has 1.06mm (0.04 inches) of snowfall and 0.22 mm (0.01 inches) of snow on the ground in January.
- March. Chicago has 0.31mm (0.01 inches) of snowfall and 0.02 mm (0 inches) of snow on the ground in March.
- February. Chicago has 0.27mm (0.01 inches) of snowfall and 0.17 mm (0.01 inches) of snow on the ground in February.
- November. Chicago has 0.15mm (0.01 inches) of snowfall and 0.03 mm (0 inches) of snow on the ground in November.
- December. Chicago has 0.12mm (0 inches) of snowfall and 0 mm (0 inches) of snow on the ground in December.
- April. Chicago has 0.03mm (0 inches) of snowfall and 0 mm (0 inches) of snow on the ground in April.
- October. Chicago has 0.03mm (0 inches) of snowfall and 0 mm (0 inches) of snow on the ground in October.
When is it windy in Chicago?
The windiest months in Chicago, United States are February, March and April. In February the average windspeed is 28.7 km/h (17.8 mph), during March the windspeed is 28.3 km/h (17.6 mph) and in April the windspeed is 27.9 km/h (17.3 mph).
What are the least windy months in Chicago?
The least windy months in Chicago are September, July and December. In September the average windspeed is 19.5 km/h (12.1 mph), during July the windspeed is 21.7 km/h (13.5 mph) and in December the windspeed is 21.7 km/h (13.5 mph).
When is it cloudy in Chicago?
The cloudiest months in Chicago, United States are January, December and March. On average in January 89.4% of sky is covered by clouds, in December 79% is covered by clouds and in March clouds cover about 73.5% of sky.
When does Chicago have the clearest sky?
Chicago has the clearest sky in August, July and June. In August 53.3% of sky is covered by clouds, in July clouds cover around 56.4% and during June clouds cover about 56.6% of sky.
What is the average daylight duration in Chicago?
The average daylight duration in Chicago is 12 hours 12 minutes 16 seconds.
Which months have the most daylight in Chicago?
The longest days in Chicago are during June, July and May.
- June - 15 hours 10 minutes 20 seconds of daylight.
- July - 14 hours 52 minutes 12 seconds of daylight.
- May - 14 hours 33 minutes 44 seconds of daylight.
Which months have the least daylight in Chicago?
The shortest days in Chicago are during December, January and November.
- December - 9 hours 11 minutes 19 seconds of daylight.
- January - 9 hours 32 minutes 8 seconds of daylight.
- November - 9 hours 50 minutes 9 seconds of daylight.
What are the humidity levels in Chicago throughout the year?
Humidity levels in Chicago, United States range from 51.1% in May to 77% in January.
What are the pressure levels in Chicago throughout the year?
Pressure levels in Chicago change from 1011.7 mb (millibars) in June to 1019.4 mb in November.
What is the visibility in Chicago throughout the year?
Visibility in Chicago changes from lowest 12.7 km (7.9 miles) in January to highest 15.7 km (9.8 miles) in April.
What are the UV levels in Chicago throughout the year?
UV levels change in Chicago from 1.3 in December to 6.7 in May.
Which months have the highest UV levels in Chicago throughout the year?
In Chicago, United States the highest UV index is during May, June and July. During May the average UV index is 6.7, in June UV level is 6.5 and in July UV index is around 6.
Which months have the lowest UV levels in Chicago throughout the year?
The lowest UV levels in Chicago are in December, January and October. In December the average UV index is around 1.3, in January UV index is 1.4 and during October UV level is 3.