If you are running a winter overhaul, or just want a dead forest feeling
Recommended winter related mods
TAVE Whiterun Winter
http://skyrim.nexusmods.com/mods/25419//?
Winter Riften and Markarth
http://skyrim.nexusmods.com/mods/32190//?
FrostFall
http://skyrim.nexusmods.com/mods/11163//?
Expanded Snow Systems
http://skyrim.nexusmods.com/mods/28110//?
always snowing
http://skyrim.nexusmods.com/mods/8306//?
Real Clouds
http://skyrim.nexusmods.com/mods/39450//?
2k Road Snow and Footprints
http://skyrim.nexusmods.com/mods/7824//?
Better dynamic Snow
http://skyrim.nexusmods.com/mods/10383//?
More snow
http://skyrim.nexusmods.com/mods/8328//?
Loading Screen Snow
http://skyrim.nexusmods.com/mods/4624//?
Snowstorm Shout
http://skyrim.nexusmods.com/mods/36463//?
Windy Skyrim
http://skyrim.nexusmods.com/mods/32723//?
Recommended winter related mods
TAVE Whiterun Winter
http://skyrim.nexusmods.com/mods/25419//?
Winter Riften and Markarth
http://skyrim.nexusmods.com/mods/32190//?
FrostFall
http://skyrim.nexusmods.com/mods/11163//?
Expanded Snow Systems
http://skyrim.nexusmods.com/mods/28110//?
always snowing
http://skyrim.nexusmods.com/mods/8306//?
Real Clouds
http://skyrim.nexusmods.com/mods/39450//?
2k Road Snow and Footprints
http://skyrim.nexusmods.com/mods/7824//?
Better dynamic Snow
http://skyrim.nexusmods.com/mods/10383//?
More snow
http://skyrim.nexusmods.com/mods/8328//?
Loading Screen Snow
http://skyrim.nexusmods.com/mods/4624//?
Snowstorm Shout
http://skyrim.nexusmods.com/mods/36463//?
Windy Skyrim
http://skyrim.nexusmods.com/mods/32723//?