The weather in Seattle will be classic December weather in the Pacific Northwest. Skies will be cloudy throughout the game. Winds will be light and variable at 5 - 10 mph out of the south southeast throughout the game. Temperatures will be cool but seasonable for Seattle in December, in the mid 40s throughout the game. Humidity will be high, starting in the upper 70s and rising to the mid 80s as the game progresses. The risk of precipitation will be moderate, at 25 to 35% throughout the game. A few showers are possible, but no heavy rain is likely. The showers could affect the passing game at times due to a loss of grip on the wet footballs. Otherwise the weather in Seattle should not be much of a factor in this game.
Enjoy the game everybody.