Not Northern WI, but WI. Sullivan WI (southeast-ish)
Ryan Stern, young commercial guy overwintering his nucs in Arkansas, keeps them in WI spring/summer/fall.
Don't know his product, just met him at North American Beekeepers Conference a couple weeks ago.
I may buy a nuc from him and I think a friend of mine will get a couple.
Here is info from an email to me with answers to questions I asked about the nucs:
The nuc's I will have this year will be 5 frame, Italian stock, the queens will be fresh (bred off my own stock), I will probably use apiguard on them for the spring treatment. As for hive bettle I can't promise anything but they are pretty darn clean tho. They will either be in cardboard boxes or there will be a box return. I'm hopping they will be up here by mid April. And no frame exchange, none of my frames are older then 2 years
The price is
1-10 ~ $100
11-25 ~ $95
26+ ~ $90
Thanks and let me know if you need any other info. My cell is