Weather
An Hour-by-Hour Look at the Rising Temps in St. Charles
The extreme heat will start Thursday with temps expected to climb Friday and Saturday.
ST. CHARLES, IL — It's going to be hot, hot, hot in St. Charles and across the Chicago area in the coming days. Officials are reminding residents, as the heat starts to set in, to stay safe, hydrated and in the comfort of their air-conditioned homes, offices or elsewhere. The hottest conditions are expected Friday and Saturday across the region with the temps steadily expected to climb starting today (Thursday, July 18).
High temps will reach between 90 and 100 degrees in the Chicago area. A head warning has been issued for Kane County with the heat index expected to reach between 100 and 110 degrees.
We've provided a glimpse below of the hour-by-hour forecast of temps and heat index in St. Charles for the coming days:
Find out what's happening in St. Charlesfor free with the latest updates from Patch.
| Thursday, July 18 | Temperature | Heat Index | Relative Humidity | Precipitation Potential |
| 12 p.m. | 74 degrees | 84 percent | 73 percent | |
| 3 p.m. | 85 degrees | 91 degrees | 65 percent | 30 percent |
| 6 p.m. | 86 degrees | 96 degrees | 72 percent | 12 percent |
| 8 p.m. | 84 degrees | 94 degrees | 80 percent | 8 percent |
| Friday, July 19 | ||||
| 4 a.m. | 78 degrees | 78 degrees | 88 percent | 16 percent |
| 8 a.m. | 82 degrees | 88 degrees | 77 percent | 8 percent |
| 10 a.m. | 89 degrees | 100 degrees | 66 percent | 10 percent |
| 12 p.m. | 94 degrees | 109 degrees | 58 percent | 10 percent |
| 2 p.m. | 97 degrees | 113 degrees | 53 percent | 9 percent |
| 4 p.m. | 97 degrees | 111 degrees | 51 percent | 8 percent |
| 8 p.m. | 91 degrees | 102 degrees | 60 percent | 17 percent |
| Saturday, July 20 | ||||
| 12 a.m. | 82 degrees | 88 degrees | 77 percent | 17 percent |
| 4 a.m. | 79 degrees | 79 degrees | 82 percent | 23 percent |
| 8 a.m. | 82 degrees | 87 degrees | 74 percent | 13 percent |
| 12 p.m. | 94 degrees | 103 degrees | 51 percent | 13 percent |
| 4 p.m. | 92 degrees | 99 degrees | 34 percent | 41 percent |
| 8 p.m. | 83 degrees | 88 degrees | 67 percent | 40 percent |
More on Patch
Get more local news delivered straight to your inbox. Sign up for free Patch newsletters and alerts.
