Phoenix weather: Heat wave continues in the Valley

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By Tami Hoey By Tami Hoey

PHOENIX -- A streak of dangerously hot temperatures continues in the Valley of the Sun, with highs ranging from 108 to 112 for the next couple of days.

The National Weather Service issued Excessive Heat Warnings through Thursday evening for northwestern and southwestern Maricopa County, including the Phoenix-metro area, as well as northern and northwestern Pinal County. Excessive Heat Warnings remain in effect for southeastern Arizona, including the Tucson area, through Wednesday afternoon.

Tuesday, Phoenix Sky Harbor reported an afternoon high of 108. This came on the heels of Monday’s record-tying temperature of 110.

Wednesday and Thursday, look for a high of around 109 in Phoenix.

With a dry air mass flowing into the region from the southwest, humidity will be low and cloud cover will be minimal, so overnight lows will dip to the 70s this week in the Valley.

A strong ridge of high pressure dominating the desert southwest will slightly weaken Friday and into the weekend as a series of disturbances track north of Arizona. This shift will slightly drop temperatures below Excessive Heat Warning criteria and occasionally kick up winds. Rain chances stay out of the forecast at this time.