I was running through the Pavlovo area and a rainstorm was going on. As I approached the town, the rain became more intense and suddenly a layer of fog covered the area and progressively became more obscuring. I initially thought this was an intentional feature of the game and was impressed that the blindness would mean a different kind of gameplay. However, when I opened my inventory menu, my character was a black silhouette and my rifle was also black, which made me think this was more of a glitch. I had to log off of the server because I could not see objects until they were nearly touching my character, and the somewhat outlined buildings were not located in the same spot in front of me as when they show up in the fog. I also am not sure if this is just an effect for my character, or if others would experience this as well. If it was only for me, then this would create a significant disadvantage for gameplay, and I know zombies' perceptions are not affected by the weather.