PHOENIX -- A strong ridge of high pressure is the culprit for the hottest temperatures seen since 2011 across the Valley.
In Phoenix, we’re forecasting a high of 118 Friday. The current record is 118. Saturday and Sunday will also include record-challenging temperatures ranging from 115 to 121 degrees throughout most Valley communities.
Outside of the lower deserts, daytime highs will range from 98 to 113 degrees. Many mountain communities will be just a couple degrees shy of their all-time record highs.
The National Weather Service issued Excessive Heat Warnings that run through 8 p.m. Sunday for most of the state.
An Ozone Health Advisory is also in effect for Maricopa County, including metro Phoenix.
There’s not much relief during the early morning and overnight hours in the Valley. Low temperatures will only dip into the 90s this weekend.
Along with the heat, we could see isolated showers or storms pop along the White Mountains and the Mogollon Rim each afternoon.
By Monday, temperatures should start their slow downward spiral. On Independence Day, we’re forecasting a high of 107 in Phoenix, which is right around the average high for this time of the year.