I have four curly CFL on my porch right now, it's below freezing outside and has been for a week or two. They're working fine but when they die, like the others before them, I'll swap in a set of LED. If the beam pattern is right that's what will go out there. I'd keep using the curlys on the porch if they would last but they're mounted horizontally and burn out after awhile, the LED won't care.
In my experience LED work fine in col weather - I have 4 LED floods to prove it. The previous old style floods worked just fine but they ran a good bit and were consuming a good bit of power so LED that draw maybe 20watts apiece vs the 100+ apiece of the others made sense. When one finally blew I slapped in some LED to test, was satisfied, replaced all of the others. Cold, wind, rain, snow, some sleet - nothing has effected them so far.