Scorching heat will continue in Indianapolis through Saturday, with highs for the next three days expected to surpass 100 degrees.

An excessive heat warning is in effect for the region through 8 p.m. on Saturday. Heat indices each day are expected to be around 110 degrees, with high temperatures around 103 to 104 degrees each day.

Watch Forecast:

The heat wave Indianapolis has endured so far this summer is virtually unprecedented for the area. Between 1989 and 2011, there were only two days that exceeded 100 degrees.

Already this year, Indianapolis has had three days of 100-degree temperatures, with at least three more expected.

Wednesday's high of 102 was the second-warmest Fourth of July since records began in 1871. The record high for Thursday is 99, with the forecast high of 103 expected to shatter that mark.

The heat wave is expected to break down on Sunday with the passage of a cold front, which will also bring a chance of some much-needed rain.

"While it won't be a drought buster, it is the best chance of what I'll call decent rainfall in our extended future," said Storm Team 6 meteorologist Todd Klaassen.

The front will usher in dramatically cooler temperatures, with highs in the mid- to upper-80s expected by next week.

Stay with Storm Team 6 and TheIndyChannel.com for the latest weather information.