The sky continued to darken. The rolling black clouds were so low that they seemed like they were almost pressing down on the land; they had even swallowed up the top part of Minas Tirith's White Tower. Rain drizzled down. Even if one were to stay in a tent, facing a fire, the dryness from the front would only make the humidity from the back all the more pronounced.
After the war situation had turned around, Sauron was not at all dismayed with the annihilation of the 200,000 Orcs as well as losing the Haradrim believers and Oliphaunt war beasts from the south, because he had seen the impressive result. In his opinion, even if the war was lost now, it would not have been in vain, because he had severed the bloodline of Isildur, the bloodline of the Gondorian royal family!
He also understood that to turn the situation around from the dire crisis they were facing previously into the deadlock now was already no small feat. It could already be considered a small victory.