When does it get dangerous

Being relatively new to hiking but having grown up in Tasmania I have spent many a freezing night on the highlands I am wondering when does hiking in Tassie get dangerous. Or how or why is it dangerous?
Clearly being under prepared for the cold is one aspect that could kill you but what else is there that makes hiking in the mountains in Tassie dangerous, is the cold weather the only real threat? Obviously falling off a mountain is another one but Im mainly interested in my preparation to cope with bad conditions.
The reason I ask is because I have been updating my gear to hopefully better serve me for Tassie conditions. Just looking at this weekend on Cradle for instance there is going to be some snow fall Friday night and potentially a very cold but sunny weekend, however the wind is going to be up around 70pkh or so Saturday night so the wind chill factor could get down to minus 10 or colder.
Im really keen to test a new tent, especially in high winds and equally keen to test a new quilt in temps that it is rated for so I am thinking this could be perfect conditions to head up there and test some new gear out!
Given the forecast or even the potential for things to turn pear shaped up there really quickly at this time of year do you think I would be taking a risk?
I was thinking of camping at or near Scott-Kilvert so of course I could use the hut as plan B!
I think it is my inexperience that makes heading out on a winters day to spend a night up there more dangerous. I feel as though I have enough of the right clothing, sleeping system and common sense and given that its not that far from the car I think ill be ok, but I don't want to take silly risks and learn too many lessons the hard way.
Thanks for any advise.
Clearly being under prepared for the cold is one aspect that could kill you but what else is there that makes hiking in the mountains in Tassie dangerous, is the cold weather the only real threat? Obviously falling off a mountain is another one but Im mainly interested in my preparation to cope with bad conditions.
The reason I ask is because I have been updating my gear to hopefully better serve me for Tassie conditions. Just looking at this weekend on Cradle for instance there is going to be some snow fall Friday night and potentially a very cold but sunny weekend, however the wind is going to be up around 70pkh or so Saturday night so the wind chill factor could get down to minus 10 or colder.
Im really keen to test a new tent, especially in high winds and equally keen to test a new quilt in temps that it is rated for so I am thinking this could be perfect conditions to head up there and test some new gear out!
Given the forecast or even the potential for things to turn pear shaped up there really quickly at this time of year do you think I would be taking a risk?
I was thinking of camping at or near Scott-Kilvert so of course I could use the hut as plan B!
I think it is my inexperience that makes heading out on a winters day to spend a night up there more dangerous. I feel as though I have enough of the right clothing, sleeping system and common sense and given that its not that far from the car I think ill be ok, but I don't want to take silly risks and learn too many lessons the hard way.
Thanks for any advise.