Patnitop is a beautifull place with lash green all around . It was just like a magic for me . As a painter spread the magic of greenery with small cotages, on a canvas.it was so peacefull and ofcourse very beautifull.
I visited jammu 2years before with my faimly and from there we hired a cab to visit all tourist spots .
It was the month of October and the weather was very pleasent . Local vendors told me that in winters it look much beautifull because of the snowfall . The town receives the large amount of snowfall that completely covers the land .This gives a great opportunity for winter sports like skiing.
So , I think any time of the year you can choose .it all depends on your wishes.But do carry light woolen clothes with you as night get a bit chilly around here.