This stretch of mild weather is coming to an end - but summer thunderstorms may be soon to start.
This stretch of mild weather is coming to an end — but summer thunderstorms may be soon to start.
High temperatures will reach triple digits perhaps by Wednesday and definitely by Thursday, according to the National Weather Service.
Mind the monsoon: Storms can be violent
Not since June 4 has the Valley's daytime high topped 100 degrees. Through Tuesday, that would be a run of 12 days with sub-100 highs, which would tie for the fourth-longest streak in the recorded climatological history of Phoenix.
Tuesday's forecast high was 97 degrees; as of 3:30 p.m., the maximum temperature recorded was 96.
On the heels of the hot weather's comeback will be the entrance of a weak low-pressure system bringing tropical humidity into the region. By Friday night, there will be a slight chance of showers and thunderstorms throughout the Valley, lasting through the weekend.
Monday was the beginning of Arizona monsoon season, when moisture from the south combines with the daytime heat to create potentially dangerous storms with heavy downpours, lightning and blowing dust.
The season runs through September.
