TUCSON, Ariz. (KGUN) — A little boost in monsoon moisture as highs continue to climb.
Partly cloudy and warm to start the day, then highs top out close to Wednesday's afternoon temps, 106-107°.
Increasing moisture will bring a slight chance for thunderstorms, mainly over the mountains from Tucson south and east. There is a 20% one or two storm cells could make it into the valley.
The main story is the excessive heat. An EXCESSIVE HEAT WARNING is in effect from 10 AM to 7 PM today through Sunday.
Meteorologist April Madison
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