PHOENIX — Editor's note: The above video explains the difference between heat stroke and heat exhaustion. 

There could be double-digit highs in the Valley next week, but you couldn't tell that on Wednesday. 

The National Weather Service said Phoenix tied the daily high temperature for Sept. 4. 

The mercury on Wednesday reached 112 degrees at 3:04 p.m. 

WEATHER: 12news.com/weather 

It tied the record from 1945. 

Wednesday was also the 28th day that Phoenix recorded a temperature of 110 degrees or higher during 2019, according to the National Weather Service. 

There was an excessive heat warning in effect for the Valley until 8 p.m. Wednesday. Temperatures were expected to reach up to 112 degrees. 

RELATED: Salvation Army activates heat relief stations on any day that has an excessive heat warning

PREVIOUSLY: 2019 just had one of the driest and warmest August months for much of Arizona