Phoenix fall heat hits record territory again

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By Christina O'Haver By Christina O'Haver

PHOENIX -- The late October heatwave in the Phoenix-metro continued Saturday afternoon when the mercury rose to 96 degrees at Sky Harbor, tying a daily high temperature record.

The old record of 96 was set back in 1990. On Friday, Phoenix also hit 96 degrees, which tied that daily high temperature record set in 2007.

The average high for this time of year is 85. Strong high pressure is to blame for the unseasonably warm temperatures. That high is shifting eastward.

By Sunday, a low-pressure system moving onshore across the Pacific Northwest and tracking east toward the Great Basin is expected to usher in cooler air from the northwest. The Valley should see daytime highs drop into the upper 80s, with the coolest temperatures moving in for Monday and Tuesday at around 85.

Northern Arizona may see a few light showers Sunday along with breezy winds. Skies should be mostly clear headed into Monday, and those winds should die down.

The cooling trend will be short-lived as high pressure builds back into the region by the middle of the week. The 90s are expected to return to the Valley again as early as Wednesday and continuing into Halloween Friday.