Western Colorado is about to slam the door on the moisture and crank up the heat. Friday Gets One More ShotFriday should be mostly quiet, although the mountains aren't quite ready to give up the ghost. A few isolated afternoon showers and thunderstorms could pop up, especially along the Divide. The combination of hot temperatures, very dry air and afternoon winds will push relative humidity down into the low to mid-teens. For the valleys, though, the forecast is pretty straightforward: hot, dry and increasingly unpleasant during the afternoon.