Just installed packages during a fairly heavy snow Sunday. I place the queen cage, one good shake to cover her, inner cover on, open package over the inner cover in second hive body. Next day remove empty package, release queen, put feeder jar over slot in inner cover, see em later when jar is empty. Gave em a walkby today. Snow is melting fast, and they are bringing in pollen. They are on drawn comb, and I'm betting they make a harvestable crop before I split them mid summer.