Rubi said: Are these seedlings, dormant plants, or sets? If they're seedlings, they will not do well with temps in the teens. I lost quite a few of my early experiment last year. If it snows, that will protect them. The snow won't hurt them.
Coming from Minnesota I figure you know what you're talking about. The bad thing is that I saw your post right *after* I got through planting.

Oh, well...
I never knew planting onions was so much fun. I also have no idea whether I planted them correctly...they're in the soil, I can see green leaves, I scattered roughly 1/2 pound of 13-13-13 per 10' of row and worked it in prior to planting.
According to my "count", I planted 155 Australian Browns (30') and 94 Texas Early Grano (20'). With an eight foot gap between them for who knows what. I've still got some seedlings left in the tray if catastrophe hits...not as many as I planted, but I really don't see us eating 249 onions in a year, anyhow.

Though a rain was predicted for last night and today the amounts were questionable so I went ahead and watered them in a bit. Of course, the rain came over night and then some more this morning...not sure how much, yet.
The next seven nights look like this:
Lo 40 °F Lo 18 °F Lo 22 °F Lo 18 °F Lo 19 °F Lo 24 °F Lo 25 °F
Ah well, if a few makes...so be it.

If a bunch makes...I'll be looking for folks to give them to.
For some reason I feel like I've set up these seedlings for cold death...for some reason the siege of Leningrad comes to mind.
On the bright side, there's only 60 days, 18 hours, and 49 minutes until spring!!!!