July 22, 2014; 2:17 AM ET
Cooler air will persist across the Chicago area into the weekend but temperatures will spike into next week. more >
Not as warm with lower humidity with times of clouds and sun
Rises at 5:39 AM with 14:42 of sunlight, then sets at 8:21 PM
Rises at 2:59 AM with 14:50 of moolight, then sets at 5:49 PM
Dec 5, 2012; 5:00 AM ET Now that it's cold enough to hit the slopes, you may want to look more closely at what materials your winter sports gear is made of. As it turns out, not all waterproofing is created equal.