If the forecast is looking bleak, why not spend your day at Bhutan National Museum? You'll be fascinated by just how much you can uncover about days gone by here.
You'll soon discover why this Paro collection of historical artifacts is a hit with travelers. If you're looking for more to explore, Paro Taktsang, Rinpung Dzong, and Druk Choeding are in the area too. They won't take you very long to get to from Bhutan National Museum.