I'm still seeing this in my full-updated 12.04 (actually elementary "Luna" but seen as Precise to the PPAs)
I've worked around this by moving all the weather-* icons to the /usr/share/icons/gnome tree, and renaming the weather.* icons I come across in different icon theme sets.
If I've done something wrong let me know, hard to believe the promised backport hasn't happened two years later on an LTS issue.
I'm still seeing this in my full-updated 12.04 (actually elementary "Luna" but seen as Precise to the PPAs)
I've worked around this by moving all the weather-* icons to the /usr/share/ icons/gnome tree, and renaming the weather.* icons I come across in different icon theme sets.
If I've done something wrong let me know, hard to believe the promised backport hasn't happened two years later on an LTS issue.