Cold and Unsheltered:
* Bleak: This is a good all-around word, meaning exposed and desolate.
* Barren: Suggests emptiness and lack of life.
* Exposed: Literal or metaphorical exposure to harsh conditions.
* Windswept: Implies exposed to strong winds.
* Unprotected: Lacking any kind of shelter or defense.
* Desolate: A more extreme version of bleak, suggesting complete emptiness and loneliness.
Dull and Cheerless:
* Drab: Lacking color or vibrancy.
* Grim: Serious and depressing.
* Gloomy: Dark and depressing.
* Melancholy: A state of pensive sadness.
* Monotonous: Lacking variation and interest.
* Stark: Simple, severe, and often unpleasant.
The best word to use will depend on the specific context and the effect you want to create.