I'll ride in the 30's (F) as long as I have my heated gloves, but I won't ride in the snow. Been there, done that and it isn't fun.
Back in the late 60s I had a 160 Ducati as my only source of transportation and came upon a hill with a stop sign on top. Snow on the ground and some ice beneath. Got to the top of the hill, used engine braking to slow down the bike and stopped. Looked both ways, let out the clutch and started sliding backwards. (I've taken a few MC training courses and never learned how to ride backwards.) Managed to stop the bike (with my feet the Fred Flinstone way). Tried it again with the same results. I ended up zooming up the hill and blew the stop sign. Fortunately there were no vehicles coming and I was able to get home safely