I always get this question twisted. It seems like such a no-brainer that it's not until afterwards that I realize that I've learned this before. And before. And before. I've learned this plenty of times, but ironically it seems like I'll never know it.
Denver exceeds 100 way more than you probably think. It happens at least every few years. It goes way down to the negative temperatures in the winter and way up in the summer.
Oceans act as a natural temperature buffer, explaining Miami’s lower than expected maximum temperature. Not sure how Denver got so hot… but… hot air rises!