Time period for measuring daily lows

[neptune]

Hi. My father takes daily readings of the high and low temperatures at his house, and he told me that he thought a properly recorded daily low temperature had to occur in the morning. IOW, he thought that if the lowest temperature of the day occurred at, say, 11:55 p.m., then you really wouldn't count that as the low. So, what I would like to know is whether a standard daily low is the absolute minimum temperature for a 24-hour period, or whether it indeed does have to occur somewhat early in the day. Thanks for any help.

[Martin]

Neptune, Officially it has to occur within that 24 hour period for that day. From 12:00am to 11:59pm. Anything that is recorded outside of that time period goes towards the next day.

If the low temperature occurs at 11:55pm, then that is the low temperature for the day.

Martin

[neptune]

Thanks, Martin!