下载谷歌应用商店
更新 Forest Live Wallpaper 随时随地
You need to have a lock screen that can use live wallpapers as background, like Locker Master or something. You might just need to enable it in the launcher settings. When setting a wallpaper on Galaxy S6, e.g., you choose whether to use if for your home screen, lock screen or both. The one in the screen shot is part of the ROM CyanogenMod.
There's a color setting called Night-time multiplier that you can change to a brighter color, making the trees and hills brighter at night. It's not the perfect solution, but it'll have to do until I (eventually) add a fix.
Make sure you have a location set in the location settings, then check if Recent weather data (via the menu in the weather settings) is available, up to date and for the correct location. If not, the weather provider is simply not accurate, but now you can change the weather provider.