No. Definitely not. On a globe north is up and south is down, the US is on the top half.
(SOUTH America is in the SOUTHERN hemisphere)
Northern.
it is the southern hemisphere
the US is not in the southern atmosphere. it is in the northern atmosphere. northern is on the north of the equator.
The Northern hemisphere.
The US is in the Northern Hemisphere.
Northern Hemisphere
northern
northern
The southern hemisphere
Northern.
The United States is in the Northern hemisphere. Anything north of the equator is in the Northern Hemisphere, and anything south of the equator is in the Southern Hemisphere.