northeasterner here. i am so happy to be out of the winter months. after cross and going through january, my motivation is so low. Getting dressed is a process. The laundry piles up and quickly and I don't have a maid to do it (aka a mom or wife is into domestic stuff like that),
on average, outdoor conditions are runnable at least 5x per week, but the coldness may make it uncomfortable to go for typical long distances, especially in wind. and forget about anything that calls for rest. (intervals and even strides) any standing around is not good.
ive had periods where ive been able to enjoy treadmills or indoor tracks, but im not there right now. if you can really get into tv or netflix, it can pass the time pretty well. I don't have the attention span unless it's something im really looking forward to.
i typically get through these months with 50-60% mileage. A PRETTY SAD BASE SEASON! THis past december i was a little more burned out and probably did even less than that. had a few weeks where i did nothing but 2 mile runs just to keep a streak alive. i am pretty weak aerobically, this hit me hard, and i still have not recovered my lungs.
BUT, ive also had years where im more motivated and i put in 100% mileage with lots of tempos, progressions, etc. So it can be done. mind over matter.
1 thing that helps me in the winter is forcing myself to get dressed for the run, without obligation to do the run. I don't think we realize, but it is a mental chore just to get ready, and put that on top of the actual run. Just commit to get dressed. It will take the stress off. and then, typically within in 10 minutes you will WANT to get out the door.