The National Weather Service recorded 2.99 inches of rain by about 7 a.m., breaking the old record of 2.91 inches set in 1933.
The Monday morning rainfall also eclipsed Phoenix's average total rainfall of 2.71 inches for Phoenix's entire summer rainy season.
Monday has had the wettest data ever in Phoenix. Governor Jan Brewer declared a statewide emergency for area impacted by the severe rainfall and flooding.
Firefighters in Phoenix-area cities were dispatched on multiple calls for water rescues during Monday's flooding.
Phoenix Fire Department Capt. Ruben Saavedra says firefighters in Phoenix and numerous other jurisdictions served by a joint dispatching system were sent on 18 calls for water rescues.
However, Saavedra says he can't immediately confirm how many rescues were actually performed. He says that's because some stranded motorists leave their vehicles and make it to dry ground on their own.Saavedra says there were no reports of injuries.
In Phoenix, a state Department of Public Safety officer used the rooftop of his SUV to ferry three people to safety after their vehicles got stuck in high water on I-10 at 43rd Avenue.
Tempe police say part of a grocery store's roof collapsed because of the rain, but none of the people inside were injured.
Phoenix Mayor Greg Stanton says at Phoenix has opened its emergency operations center to coordinate the response to the flooding.
SRP says there are less than 1,000 customers without power. Poles down near Sossaman and Riggs and 75th Avenue and Indian School Road caused the outage.
ADOT is working to pump all of the flood water off and out of the freeways.Authorities say I-10 from 51st Avenue to the Stack was closed until at least 2 p.m. for clean-up. DPS said there were at least a dozen cars stuck on the roadway.
SR-51 is completely reopened.The US 60 was closed due to flooding near Mill and some drivers got stuck in the flood waters and had to be rescued, according to DPS.
Eastbound Frye Rd. between Galleria Pkwy. and the southbound Price frontage Rd. is closed for a mudslide on southbound Price Rd. at the exit ramp to the Loop 101 Price freeway.
The Indian Bend Wash filled quickly stranding several motorists. Fire crews rescued several drivers including two at Hayden & McCormick Parkway.
Heavy rainfall caused a sinkhole to develop on Thomas near 87th Avenue in west Phoenix.
Mtn. Park Community Church in Ahwatukee was flooded with water almost rising higher than chairs in the church.
In Mesa near Stapley & Southern emergency crews were seen evacuating residents from a flooded street, many of homes have basements which are flooded.
Roads may still be closed around valley. Police officers remind you to avoid testing flood waters and to find alternate routes.
Classes have been cancelled at Apache Junction High School, Mesa Community College, all schools in Roosevelt School District, Dysart School District, Palo Verde Elementary School, Imagine Schools, Legacy Traditional Schools, South Valley Arts/South Phoenix Arts and Prep School, Grand Canyon University, all AAEC schools, Phoenix Country Day School, Eagle College Prep Harmony Charter School, all schools in Washington Elementary School District, all District 1 schools, all Leadership Academy schools, Riverbend Prep Academy, St. Catherine of Siena School, all schools Liberty Elementary School District, all Litchfield Park schools, all schools in Fowler Elementary School District, all schools in Nadaburg School District, all schools in Littleton School District, all schools in Fowler Elementary School District, all schools in Pendergast Elementary School District, Buckeye Union High School, all schools in Creighton School District, Arlington Elementary School, Buckeye Elementary, Westland Academy, all Murphy Elementary Schools, Valley Lutheran at 7th Avenue and Camelback, all Villa Montesorri schools, all schools in Cartwright School District, all American Leadership schools, Tempe Prepatory Academy, all Phoenix Elementary School District schools, Sabis International School and Bourgade Catholic High School.Glendale Elementary Schools are delayed by two hours and Maricopa Community Colleges are delayed until noon.
Arizona School of Massage Therapy and Steiner Institute of Esthetics are closed for the morning, but will be open in the afternoon.Tempe Union High School District, all Kyrene schools, Tempe elementary schools, Higley Unified School District, all Gilbert schools, Paradise Valley Schools District, Deer Valley School District and Scottsdale Unified School District are open.
Chandler School District schools are open, but they say to keep your kids home if you can't get them to school safely.
The American Red Cross is opening a shelter at Copper Canyon High School, 9126 W. Camelback, Betty Fairfax High School, 8225 S. 59th Ave., and shelter team is standing by in La Paz County, in case a shelter is needed in Wenden or Salome.
Residents at an apartment complex near 63rd Ave. & McDowell woke up to a flooded parking lot, workers were seen pumping out the standing water. Some of that water did damage some apartments.
A Fry's grocery store in Tempe near McClintock & Baseline also saw damage from the storm when the roof collapsed.
Investigators believe that lightning struck a home starting a fire that caused significant damage to a house near Dobbins & 26th Avenue.
This is a developing story. Stay with FOX 10 News for updates.
The Associated Press contributed to this story.