It's winter here now. Not too cold actually, I'm only wearing a T shirt right now.
It's winter in my spiritual walk as well now, and I'm enjoying it immensely.
It's a season that there's really not much to see on the surface, all the leaves have fallen, no fruit, no harvest, but deep down inside there's a lot going on: only between you and the life giver. It's really important to have a good solid long winter, so that you can store up enough life inside to cope with the coming spring and summer. Harvest season's nice, but it'll be exhausting, and without a solid winter, the harvest will fall short and won't be able to stand.
Autumn can be sentimental, but there's not even a worry in the winter. All the outside is gone and forgotten, what is remained and strengthened is the richness of God Himself, His loving presence and His faithfulness.