ohhhhhhhh!!! mine works!!
Here's what I did....
atop the weather box thingie at the bottom of the home screen, click on "Your Local forcast"
then it takes you to your profile settings...
scroll down to the weather city code box, and click on "city list" or something to that effect.....
find your city and click on it.... the code is the same code for your airport.... y'know like Los Angeles's airport is LAX...... (I think)
PRESTO!! You have your current weather conditions along with a 5-day forcast at the bottom of your screen!!
COOL!!
I'm in a canadian city.... I didn't think it would work, but it did