if by the 30's you mean F, I would do it today, they will be dopey from the cold.

and it depends on how and where you are moving them to

And bees will find their way back if it is less than a couple miles.

They know where they live.

Not sure but if you move them when it's cold, is that a good thing because they'll be less active?

The cold will keep them sluggish, but more of a chance of chilling the eggs and larva. So might be easier on me but harder on the bees. On the other hand, it will be cool enough to keep them shut in the new

hive for a couple of days which helps re-orient them to their new place.

Right, I mean, if you were gonna kill the hive, that's one thing but maybe it's good if they all move and wake up in the new location with that new bearing?

Ultimately I decided to hold off. Just too cold and rainy to make it a good move. Will have to look at next weekend.