Chicago Weather in June
June's summer weather includes the sunniest conditions all year for Chicago, Illinois. This month can also expect a few really hot days and more frequent thunderstorms.
This page gives detailed information on the typical June temperature, precipitation, sun, humidity, wind and storms for Chicago. The numbers here are historical averages based on temperature, rain and snow measurements gathered at Chicago Midway Airport and other climate data from Chicago O'Hare International Airport.
Temperature
| 81 °F | June average high | 27 °C |
| 63 °F | June average low | 17 °C |
| 18 days | 80 °F max. or more (27 °C) |
| 12 days | 60 °F min. or less (16 °C) |
The temperature usually rises every day in June to over 60 degrees Fahrenheit (16 degrees Celsius) at Chicago. The city averages 5 days this month when the thermometer reaches into the 90s °F (over 32 °C). A day as hot as 100 °F (38 °C) is not normal here for June.
The thermometer dips to 50 °F (10 °C) or below on an average of just 1 night. June does not normally get cold enough for frost.
Rain
| 4.5 in | total precipitation | 115 mm |
| 11 days | of rain |
Half the time, Chicago receives 2.6 to 5.5 inches (65 to 139 mm) of rainfall in June. One in four years has drier weather, while another one in four is wetter.
Sun
| 67 % | sunshine |
| 7 days | clear skies |
June is Chicago's sunniest month. The sun's rays reach the ground in Chicago during 67 percent of daylight hours on average in June, for a total of 305 hours in the month. Typically on 7 days this month the sky is mainly clear, with at most 30 percent cloud cover.
Sunlight in June at Chicago averages 15 hours and 10 minutes a day. The longest days of the year, from around June 16th to 25th, last 15 hours and 13 minutes from sunrise to sunset.
Humidity
| 66 % | June average humidity |
The relative humidity in Chicago during June usually peaks at 79 percent in the morning then drops to 52 percent by mid afternoon.
| Local Time | 12 am | 3 am | 6 am | 9 am | 12 pm | 3 pm | 6 pm | 9 pm |
| Humidity % | 75 | 79 | 78 | 63 | 55 | 52 | 55 | 67 |
Wind
| 9.3 mph | June wind speed average | 15.0 kph |
June is a less windy than most other months in Chicago.
Storms
| 3 days | rainfall of 0.5 inches (13 mm) or more |
| 7 days | with thunderstorms in June |
Chicago experiences more thunderstorms in June than other months.
Reference
The weather data here are long-term averages provided by the US National Centers for Environmental Information (NCEI). Temperature and precipitation are 1991-2020 normals while humidity and thunderstorms are 1961-1990 normals.