Illinois in july: average Weather, Temperature and Climate
Weather in Illinois in july 2025
The weather in Illinois in the month of july comes from statistical datas on the past years. You can view the weather statistics for all the month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout july
good weather UV index: 6
Weather at 6am
68°F
Clear/Sunny
34% of time
30%
16%
11%
Weather at 12pm
81°F
Clear/Sunny
45% of time
23%
17%
10%
Weather at 6pm
79°F
Clear/Sunny
52% of time
19%
19%
5%
Weather at 3am
68°F
31%
27%
19%
13%
Evolution of daily average temperature and precipitation in Illinois in july
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Illinois in july.
The climate of Illinois in july is good
In july in Illinois, the climate is wet (with 4.5in of rainfall over 7 days). This is better than the previous month since in june it receives an average of 5.3in of rainfall over 9 days.
The climate comfortable here this month. The high seasonal norm is 83°F. On average, the recorded minimum temperature is 68°F. Thus, the mean temperature average in july in Illinois is 76°F. These temperatures are far removed from those records observed in Illinois in the month of july with a maximum record of 94°F in 2010 and a minimum record of 50°F in 2013. You can plan to have about 8 days with temperatures up to 86°F, or 26 of the month.
On average, in Illinois, the days of july last 14:47. Sunrise is at 04:40 and sunset is at 19:27.
With good weather conditions, july is recommended to go in Illinois.
Seasonal average climate and temperature of Illinois in july
Check below seasonal norms These statistics are set from the weather statements of the past years of the month of july.
| July | |||||
| Outside temperature | |||||
| Average temperature | 76°F | ||||
| Highest temperature | 83°F | ||||
| Lowest temperature | 68°F | ||||
| Highest record temperature | 94°F (2010) | ||||
| Lowest record temperature | 50°F (2013) | ||||
| Number of days at +86°F | 8 day(s) (26%) | ||||
| Number of days at +65°F | 31 day(s) (100%) | ||||
| Wind | |||||
| Wind speed | 15km/h | ||||
| Wind temperature | 68°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 4.5in | ||||
| Number of days with rainfall | 7 day(s) (23%) | ||||
| Record daily rainfall | 2.4in (2009) | ||||
| Other climate data | |||||
| Humidity | 93% | ||||
| Visibility | 8.45km | ||||
| Cloud cover | 30% | ||||
| UV index | 6 | ||||
| Daily sunshine hours | 14 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 04:40 | ||||
| Time of sunset | 19:27 | ||||
| Length of day | 14:47 | ||||
| Our opinion about the weather in july | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last july?
Here is the day by day recorded weather in Illinois in july 2024:
52°F to 70°F
61°F to 79°F
70°F to 83°F
65°F to 74°F
67°F to 76°F
61°F to 74°F
65°F to 83°F
67°F to 77°F
68°F to 77°F
63°F to 81°F
65°F to 81°F
65°F to 81°F
70°F to 85°F
74°F to 85°F
72°F to 86°F
72°F to 83°F
65°F to 76°F
58°F to 70°F
56°F to 72°F
59°F to 76°F
65°F to 77°F
63°F to 81°F
67°F to 81°F
67°F to 79°F
63°F to 79°F
58°F to 79°F
61°F to 81°F
70°F to 77°F
68°F to 83°F
76°F to 90°F
72°F to 90°F
Map: other cities in the United States (USA) in july
Cities near Illinois:
| Chicago in july | good weather |
| St. Louis (Missouri) in july | good weather |
| Indianapolis in july | good weather |
| Wisconsin in july | good weather |
| Missouri in july | good weather |
| Des Moines in july | good weather |
| Louisville (Kentucky) in july | good weather |
| Cincinnati in july | good weather |
| Kansas City in july | good weather |
| Nashville in july | tolerable weather |
| Detroit in july | good weather |
| Minneapolis (Minnesota) in july | good weather |
Click over cities on the map for information about the weather in july.
Illinois
perfect weather
good
tolerable
bad
very bad
Weather data for Illinois in july:
Weather data for Illinois for july are derived from an average of the weather forecast since 2009 in Illinois. There is a margin of error and these forecasts are to be considered as general information only. The weather in Illinois can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Illinois.