Comment by calsy

Daily min/max by calendar day has never been a standard.

Weather is not divided by some arbitrary time humans created. Max and min temperatures occur overwhelmingly in their respective day and night cycle. Adding some arbitrary cut off point in the middle of those cycles just makes comprehending max/min temps unnecessarily more difficult then it needs to be.

What if we set the calendar day to change at midday, would we start reporting max temps up to 12pm, past 12pm? How useful do you think that info would be?

People are interested in the overnight minimum, not a confusing minimum that could be either early morning or just before midnight depending on the weather at the time.