Atm, i'm at the 3th-4th time of game replaying, at hour 300 of gametime. Picked up the trail of the Knights of the nine expansion, at this point i was on the sword of the crusader quest, Lathon offered to join up, took him with me, then i started to go north to Underpall cave. Few miles up north, a new Oblivion gate opens up (already closed 52, so this would had been 53) between Felgageldt Cave and Fort Roebeck. Told Lathon to stay outside so i went in. According to uesp, was the random oblivion world 4. Started going upwards inside one of peripheral towers (the one from the right) according to the drill. When i reached atop of it, in the room that mimics the Sigilium Sanguis room, the bright red inside it becamed gray. At this point i thought i somehow slipped into a Fallout 3 area, but it wasn't the case, looked up where the hole is atop in the tower, at the red oblivon sky, becamed a gray cloud and i never saw that before. Specifically i want to say that i am only using Official Plug-ins, last patch, the only unnoficial mod i am using is "no item glow". At this point will try to close the gate, and see if the Oblivion sky and Nirn sky switched places.

http://i.imgur.com/Iq7J6.png
http://i.imgur.com/eXXaC.png
http://i.imgur.com/g9xYE.png
http://i.imgur.com/mwihE.png
http://i.imgur.com/fyCqC.png

I had this happen once before. It was in one of those worlds with two oblivion gates. I went into the Oblivion world through one gate, and went back to Cyrodiil through the second gate. Then I turned around and went right back inside. The http://img.photobucket.com/albums/v90/subrosa_florens/oblivion/Oblivion663.jpg Everything was normal when I closed the gate and went back to Cyrodiil. It was just a little glictch.

You can force the Oblivion weather back by opening the console and typing in the following:
fw 32e15

Well the overcast followed me everywhere, then it would go to clear, then maked a few hundred meters, overcast again. I'm trying a uninstall with revo, reinstall.

Edit: Even with reinstall, or fw, the overcast and heavy fog pops back right after i use something from inventory, even from the hotkeys, then disappears. The only thing this glitch is affecting is my immersion.