Phoenix weather: Triple-digit highs this week

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By Tami Hoey By Tami Hoey

PHOENIX  -- A ridge of high pressure that’s drifting across the desert Southwest is bringing us unseasonably warm weather statewide. There have been a few showers in the mountains of eastern Arizona but for the most part, we’ll see very limited rainfall over the next several days. In the Valley, highs are going to be running in the range of 100-105 degrees with overnight lows in the 70s.

Toward the end of the week, a cold front approaches from the Pacific. It’s the first cold front of the fall season and even though it’s going to be pretty weak by the time it gets to Arizona, we could still see some showers and thunderstorms by the weekend.

Ahead of the front, moisture will be pulled into Arizona from the south and by Friday afternoon, we’ll see an increase of storms in the mountains. By Saturday and Sunday, we have chances for showers and thunderstorms in the Valley. Right now, the chance for rain in your neighborhood is probably running at 20-30 percent.

For sure, we’ll see cooler temperatures. By Sunday, we’re expecting highs only in the 80s. And that trend should continue into the middle of next week, as we get our first, decent run of some fall weather across the state. The monsoon also “officially” ends a week from today on Tuesday, the 30th of September, so the cooler weather should be welcome for most.