Phoenix hits 100 degrees for the first time in 2017 on May 3.
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Tubers enjoy the first day on the river as Salt River Tubing opens for the summer season. David Kadlubowski/azcentral.com
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Scenes from a lightning storm over Phoenix Monday, March 28, 2017.
Stephen Hickey of Phoenix
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Time-lapse video show clouds that appear as a pinwheel over Phoenix at sunset in March 2017. David Kadlubowski/azcentral.com
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A dust storm cancels a soccer match on March 22, 2017, at Falcon Park in west Phoenix. Daniel Gonzalez/The Republic
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Phoenix hits 100 degrees for the first time in 2017
Salt River Tubing open for 2017
Lightning over Phoenix
Clouds over Phoenix
Dust storm hits Falcon Park in Phoenix
Phoenix officially hit its first 100-degree day of the year on Wednesday, the National Weather Service said.
The temperature at Phoenix Sky Harbor International Airport reached 100 degrees at about 4:30 p.m.
The Weather Service predicts the next two days will see temperatures over 100, and Friday’s high could approach a record. The forecast calls for a high of 104 Friday while the record for May 5 is 105, set in 1989.
But a cooling trend will follow beginning on Sunday, with high temperatures in the Phoenix area dropping to the upper 70s or low 80s by the early part of the week, the Weather Service said.
The 100-degree heat is due to a high-pressure ridge over Arizona, according to the Weather Service.
The average date for the first annual 100-degree day in Phoenix is May 2. Last year, the 100-degree mark was reached on May 4.
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