A recent true story.

 

On a warm, humid summer day, I walked into an air conditioned store and stayed for several minutes. I assume my eyeglass lens temp stabilized at the temp of the store's A/C'd air. As I left the store, my glasses "fogged up" until the outside air warmed them a bit. I went home, looked up the weather on the Internet and found that the outside temp was 82° and the dewpoint was 73°.

 

Should I interpret my experience to mean that the A/C'd air in the store was at or below 73°?

Not necessarily. It could have just been a local variation -- for example your breathing and sweating should raise the humidity in your vicinity and so lower the dew point. Not everywhere in a forecast area will the temperature and humidity be exactly the same.

Not necessarily. It could have just been a local variation -- for example your breathing and sweating should raise the humidity in your vicinity and so raise the dew point. Not everywhere in a forecast area will the temperature and humidity be exactly the same.

 

corrected.

 

but he's right, humidity can vary dramatically depending on how close you are to a body of water or how sweaty you are. weather reports have a very generalised format with very scant data