I'm in Kansas City and have Google Fiber. I don't really know how cold Louisville can get but I can tell you that we got pretty gosh darn cold (10-20 degrees be

I'm in Kansas City and have Google Fiber. I don't really know how cold Louisville can get but I can tell you that we got pretty gosh darn cold (10-20 degrees below 0F) last week during the Polar Vortex freeze. And we're going to be flirting with those temps again this week. But to answer your question, I have not noticed any disruption or degradation of my service as a result of the cold temperatures. EDIT: As others have said, I think the problems in Louisville come more from shoddy installations thus making them more susceptible to extreme weather rather than 'fiber not working in cold weather'.