Officially hit 100° (38C) in Denver yesterday for the high, first 100° day of the year (officially). For some unknown reason, they take the 'official' Denver temperature reading at Denver Int'l Airport, which is like 20/25 miles outside the city, it's completely ridiculous.
I circled where actual downtown Denver is and the airport is up in the upper right corner of the map. It's always hotter in the city than it is out in the middle of nowhere where the airport is.