Comment 3 for bug 1176183

So, I still don't know how it got set to None, but if you change line 1552 in indicator-weather from

if len(place)>1:

to

if len(place)>1 and place[0] is not None:

It should solve the crash issue. You will have to re-add your city.

I posted a new package to my ppa with that change (and a fix for an unrelated crash) for those interested.