Excessive Heat Warning issued today through Friday

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PHOENIX -- The National Weather Service had issued an Excessive Heat Watch to go into effect tomorrow, but at about 9 a.m., they bumped the watch up to a warning and made it effective today. That warning will remain in effect through Friday evening, and includes Yuma, La Paz County, portions of Pinal County, and the Valley Metro area.

While our humidity is likely going to come down a bit over the next couple of days, the temperatures will be heating up. Temperatures could peak at 116 degrees in some parts of the desert.

A high pressure ridge will build and a little disturbance could move through by the end of the week. That means a 20 percent chance of thunderstorms Thursday, Friday and through the weekend.

It's going to be partly sunny and hot today. Expect a high of about 110 degrees. Overnight lows will range between 79 and 89 under partly cloudy skies.

Plan on a high of 112 Wednesday and 114 Thursday.