Sounds like it's been a rough winter for you! I've been there--serious illness in the family several years back during a really stormy winter that felt like it would never end.
And this winter is getting old too.
I manage to find some runnable roads (ugly but doable) and social time with runner friends... and some treadmill time--helps me hang in, stay sane (well, as sane as I care to be). ;)
Wish I could single-handedly change your weather and mine to 65 and sunny. But if nothing else, I can tell you that you're not alone and this will pass and hang in. Maybe get hold of some inspiring videos, drink a beer w/ friends....
Won't tell you not to whine. In fact, whine, rage, throw a snowball at a tree, etc. It might be cathartic.
Feel better soon!