Higher pressure air in the top of the atmosphere pushes the heat down toward the ground, creating sweltering, unpleasant conditions.
Paoli Peaks originally planned to open December 13, but temperature prevented the slopes from making snow.
Temperature records from the National Weather Service show Indiana has been experiencing much lower temperatures this year than it did in 2012.
Scientists looked at how potential climate change scenarios could affect crop production, human health and the global economy, among other things.
Despite record breaking weather in the summer, experts says fall and winter is projected to be normal temperature
City Utilities Director Patrick Murphy says since the restrictions were instituted, the average daily demand has decreased 18 percent to 20 percent.
A naturalist at McCormick's Creek State Park says temperature is always the key factor in how colorful the leaf show will be.
More than two-thirds of the state is already under a burn ban because of the drought conditions.
Temperatures could rise to 96 degrees Sunday, breaking a century-old record.
Meteorologists say the setup is similar to the system that fueled at least 20 tornadoes Wednesday in the Midwest.