Ok here is a new and improved Dungeon detection file.
http://www.mediafire.com/?offzyachsmuuk9qInterior cells with the new Dungeon Sky include which had regular weather before;
Angarvunde - coc Angarvunde01
Angarvunde Ruins - coc Angarvunde02
Avanchnzel - coc Avanchnzel01
Silent City Catacombs - coc BlackreachSewer01
Bleakcoast Cave - coc BleakcoastCave01
Bleak Falls Temple - coc BleakFallsBarrow01
Bleak Falls Sanctum - coc BleakFallsBarrow02
Blind Cliff Bastion - coc BlindCliffCave01
Removed the sky for Abandoned Prison cell as it is with vanilla.
The one problem I have now is that sky during day is darkened and I haven't figured out how to increase the brightness of it without changing imagespaces, thinking of RL users like myself, and to make at as compatible as I possibly can.