I've created two SD 1.5 LORA's for snowy winter scenes. The first one is trained on Landscape Photoreal and is more landscape oriented. The second one is trained on Perfect World, and is much better for character generation. Use ClearVAE for best results. Some images will look a little wonky when generated, but will clean up nice when Hires Fix is applied.
Pony+SDXL Version Available Here:
https://civitai.com/models/648997
Feedback Always Welcome!