Florida.
No, the bottom portion of Texas is about the same latitude as most of Florida. However, Key West on the tip of Florida is the furthest south in the continental United States.
The tip of Baja California is farther south.
"farther south ... California" ... Florida
Florida
Florida is farther south
The question is a bit ambiguous as it depends on what you mean by "farther." If you are asking which state is farther south, Florida is farther south than Ohio. However, if you mean which state is farther from a specific point, that would depend on the location you are measuring from. Overall, Florida is generally considered farther south than Ohio.
Texas; it's bigger, and extends farther.
Northern California is farther north than Southern California.
Because if you look at a map it is farther south.
Hawaii is the southernmost of the 50 states.
Hawaii