DECATUR, Ill. (WAND) - The calendar turns to yet another month on Wednesday. The bigger question though, does the weather turn?

The current source region of air for us says, not so fast. One of the gas laws that governs thermodynamics states, pressure is directly proportional to absolute temperature. So, as one rises, the other does as well.

Given the current state of our jet stream (first graphic), high pressure continues to keep Illinois under a blanket of heat. Although it is not humid, the recent warm spell continues to surpass the average high temperature of 72 with ease. However, in a week from Wednesday, notice how the jet stream changes orientation (second graphic). While there is no major cold weather outbreak anytime soon, there should be relief on the way, albeit s

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