While I understand what you're saying, the exact temperature and humidity is usually irrelevant to all but:
1. Pilots
2. Farmers
3. People that have a car whose antifreeze levels are set to blow out their radiator at 2 degrees fahrenheit, so if it's 3 degrees, they're safe.
4. A small percentage of us.
The original list, and those picking it apart for the people in number 4, above, was for the most of us.
Does it really matter that the temperature, for most cities is for the airport, not for your particular locale? If it's 63 in Juneau, AK right now doesn't mean that it's 63 all over the city. It may be 65 in some spots, and 61 in others, but if it's that critical for the exact temperature, go for it.
However, for me, I'll just open the window, and not rely on my soon to be arriving

Watch for that.
I will concede to you that it's nice to have it for when I travel to look at what the weather will be like, as on my last trip, but that's outside the norm:
SEA: 31F
ORD: 10F (the jetway was like walking into a freezer)
CHS: 71F (the rest of the week was near freezing)
CHS: 42F
BNA: 28F
DEN: 2F (the flight attendant hid in the aft restroom while the service crew cycled out the trash and restocked the drinks)
SEA: 40F
Again, the original list was for those day to day occurrences, not a be-all, end all list for all occurrences.