Phoenix weather: Hot days ahead

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By Catherine Holland By Catherine Holland

PHOENIX -- There is a slight chance of monsoon storms in the Valley today with a forecast high of 109 degrees. 

Scattered thunderstorms are possible in Southern and Eastern Arizona today, with a slight chance that we could see blowing dust or even a bit of rain in the Valley. 

But after today, our flow of monsoon moisture temporarily shuts off as the ridge of high pressure builds right over Arizona and brings in drier air from the west. Temperatures will also be warmer, with an Excessive Heat Watch in effect for the Valley for Wednesday, Thursday and Friday. 

Afternoon temperatures will peak between 111 and 113 through the end of the week and near 110 over the weekend, which also looks hot and dry.  Overnight lows are forecast to linger in the mid to upper 80s.

Today is the 22nd anniversary of the hottest day ever recorded in Phoenix.  It was June 26, 1990, when Sky Harbor hit an all-time high of 122 degrees. The hottest temperature recorded in Arizona was 128 in Lake Havasu in 1994. 

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