No. The answers above are incorrect. The box clearly says you should use them only in dry locations and only in "open" fixtures. Other bulbs are tested and rated for use outdoors, including the Switch and the Xledia which I reviewed. Both those bulbs and the Feit, which I haven't tried yet, are also rated for enclosed fixtures. The bulbs that are billed for this purpose have special cooling systems that remove the heat from the electronic components to prevent them from overheating,
I'm not 100% sure if they're made for to be out in pouring rain, but I use one in a tiny bathroom that's insanely humid with no problems and also got one on my front porch in a down-firing lamp that's been through some rough weather fine.