It's so gloomy and unpleasant every day, isn't it?
Literal
Every-day gloomy-and unpleasant [agreement-ね].
うっとうしい ('gloomy, oppressive, dreary') is often used for persistent bad weather or lingering annoyance. The ~くて form chains two adjective states. ね seeks the listener's agreement — a classic weather-complaint conversation opener.