This page documents all tornadoes confirmed by various weather forecast offices of the National Weather Service in the United States from October to November 2021. Tornado counts are considered preliminary until final publication in the database of the National Centers for Environmental Information. On average, there are 61 confirmed tornadoes in the United States in October, but steady activity throughout the month, plus several smaller outbreaks, pushed the total to a new monthly record of 150 despite the lack of any major tornado outbreaks. By contrast, November saw only 21 tornadoes, well below the average of 58.