July 18
- 1883 – An F3 tornado passed near Hitchcock, South Dakota sweeping away at least one farm house. At least three people, possibly as many as seven, were killed on one farm.
- 1996 – An F5 tornado hit Oakfield, Wisconsin, destroying 60 homes, 6, businesses, and 2 churches with 4 homes completely swept away. The tornado injured 12 people but killed none. An F2 tornado killed on person in Marytown, Wisconsin.