Rosati was born in Dover, Delaware

Dover, Delaware

The city of Dover is the capital and second largest city in the U.S. state of Delaware. It is also the county seat of Kent County, and the principal city of the Dover, Delaware Metropolitan Statistical Area, which encompasses all of Kent County. It is located on the St. Jones River in the Delaware...

 and grew up in Pine City, Minnesota

Pine City, Minnesota

Pine City is a city in Pine County, Minnesota, United States. The population was 3,123 at the 2010 census. Pine City is the county seat of, and the largest city in, Pine County...

. She attended Gustavus Adolphus College

Gustavus Adolphus College

Gustavus Adolphus College is a private liberal arts college affiliated with the Evangelical Lutheran Church in America located in St. Peter, Minnesota, United States. A coeducational, four-year, residential institution, it was founded in 1862 by Swedish Americans. To this day the school is firmly...

 where she studied speech and communications. She graduated in 1985 and received cum laude.

Rosati started her career in Rochester, Minnesota in 1985. KTTC-TV hired her as a general assignment reporter and less than a year later, promoted her to producer and co-anchor of the 6 p.m. and 10 p.m. newscasts. Rosati later went to WGRZ-TV

WGRZ-TV

WGRZ, virtual channel 2 , is the NBC-affiliated television station in Buffalo, New York. Its studio is located at 259 Delaware Avenue in downtown Buffalo. Its transmitter is located at 11530 Warner Hill Road in South Wales, New York...

 in Buffalo, New York

Buffalo, New York

Buffalo is the second most populous city in the state of New York, after New York City. Located in Western New York on the eastern shores of Lake Erie and at the head of the Niagara River across from Fort Erie, Ontario, Buffalo is the seat of Erie County and the principal city of the...

 and anchored the 6 p.m.