Exactly the same principle applies.
Look at the title of this submission. Stop and before you knee-jerk a response, contemplate that this isn't "it's hot, yo, and getting hotter". It is specifically that July was the hottest month "ever recorded", which someone quite rightfully noted was since 1880.
> zealots such as yourself
Stuff like this breaks the HN guidelines, and there is much of it in your comments. Please post civilly and substantively, or not at all, even when others are wrong. In fact, especially when others are wrong.
Variation at a point is high. Variation for a period of a single day is high. Samples are taken frequently. Thus new records will be set regularly.
Variation for the entire globe is low. Variation for a period of an entire month is low. There are twelve samples per year. Thus new records would not be expected to be set frequently.
Again, what exactly is your point?
For regional records, you're tracking 365 events per year. Each one is compared with that day on prior years.
For global records, you're tracking one event per year (since July will always be the warmest month).
Thus, if you'd expect to set a new record every 50 years, then you'd see on average one global record every 50 years, but you'd see about seven daily regional records every year.
Also consider that you should be seeing both record highs and record lows. Record lows continue at a good pace for regional daily records, but there hasn't been a global record low for well over a century.