I personally shut the GK weather module down. It has the problem that need some fix very seriously.
One day, it works and another day it doesnt.
Maybe this is something about cache, maybe it is about the source: google site itself.
The UGLY thing is: when it fails, it makes the error:
modules/mod_gk_weather/helper.php on line 216 (or 219)
and SCREW the look of ENTIRE website!
Why dont you make an error message when the connection to the source failed or something wrong makes mod GK weather not work.
mod_googleweather did good job on it. when it fails, the visitor see only error message in the tab, not the UGLY frontpage.