I've been writing some macros and user controls for this site I'm working on, and I've noticed some odd behavior that I can;t figure out. The latest control I've written pulls weather from the NOAA website and works great when I throw it on a normal .aspx page on my boxes IIS server. I've set it up as an Umbraco macro now, and this is were things start acting a little weird. The first time I pull up the page the macro display is empty (should show a pretty little box with a bunch of weather info). The static titles, images, and layouts are all there, but the content pulled from NOAA is missing. Next, when I hit refresh on the browser, it rebuilds the page and it will display all the information, including dynamic content from NOAA, this time around.

Am I doing something incorrectly?

Thanks!
Zac