Thank you @bunnypunia. Snow formation is not related to temperature alone and it is mainly dependent on moisture content... it can be too cold to snow or too hot to snow as well... it was -6 in Bumthang during night you may check it online as well.

For person staying in Himachal I am sure this science is well known.... and moreover these photos are from Buddha point in Thimphu at noon.

Ladakh?? Thanks but no thanks :) I would definitely drop in to manali comforts when I am there though