PHOENIX -- The official temperature in Phoenix hit 115 degrees at 1:32 p.m. on Thursday. That breaks the record of 114 degrees set in 2006.
The high reached 116 degrees shortly after 2:15 p.m.
The overnight low on Thursday was 93 degrees. That also set a record.
Gila Bend got up to 120 degrees.
The Phoenix area, south-central Arizona and much of southwestern Arizona on Thursday are again under an excessive heating warning.
The warning issued by the National Weather Service runs until 8 p.m. Thursday.
Forecasters say highs Thursday will range between 110 and 115 degrees in many low desert locations.
Yuma on Wednesday set a record for the date at 117, surpassing the record of 115 set on July 23 in 1959.
Also on Wednesday, Phoenix tied the day's record of 114, which was set in 2006.
For the first time since 2012, Salt River Project on Wednesday delivered a record amount of energy to its Phoenix-area customers.
Between 4 and 5 p.m., SRP delivered an estimated peak demand of 6,707 megawatts.
That peak topped the previous SRP high this summer of 6,382 megawatts on July 22 and the all-time record of 6,663 megawatts on Aug. 8, 2012.
Strong customer demand is the result of several factors, including an increase in the number of SRP electric customers, extreme daytime temperatures, higher overnight temperatures and relatively high humidity.
Because the forecast calls for continuing high temperatures and increasing humidity, SRP power experts predict that records for high energy demand could continue this week.
SRP is the largest provider of electricity in the greater Phoenix metropolitan area, serving about 990,000 customers.
Record high just bumped up to 116 at Sky Harbor according to @NWSPhoenix— Royal Norman (@royalnorman) July 24, 2014
Phoenix hits record high of 115 at 1:28 this afternoon according to @NWSPhoenix— Royal Norman (@royalnorman) July 24, 2014
High today so far is 115!!!! @royalnorman...I think the heat index feels more like 130!— Jill Galus (@JillGalus) July 24, 2014
In the shade? Seriously? pic.twitter.com/sEFbhjLqvB— Karen Brown (@KarenBrown3TV) July 24, 2014
The Associated Press contributed to this story