California and Florida are not cities, they're states. It depends on what you're interested in. There are literally thousands of places to visit. LA, Portland, San Diego, Dallas, Austin, Houston, Memphis, Nashville, New Orleans, Minneapolis, Miami, Orlando, DC, Philadelphia, Boston: that's a short list of major cities not on your list.
As Brooklyn Brdge has pointed out, California and Florida are NOT cities. They are very large states.
I live in San Diego, California. Coming here would be completely different than going to San Francisco, California. There is about 500 miles in between them. You need to decide where you want to go. I would pick places that have a climate that you want to visit and are comfortable with. You also need to factor in the cost of getting from one place to another.
August/September is high hurricane season. If you decide to go to FL keep that in mind.
Why don't you read this page for starters and perhaps get a good guide book. Hard for strangers to suggest places without knowing anything about you or your family or their ages or interests
I would think about picking a region, and exploring it fully. A coast to coast trip is a lot of work, and you will get to see more by limiting your travel. I am planning a trip to Boston, and decided to see New England while we are there. I would love to visit South Carolina and Georgia, but that is for another trip. Consult a map, and think about what you have always dreamed about visiting. Then you wil have something to work from.
If i had a friend who was visiting the US for the first time and a couple of months to travel, I would encourage them to visit New York City, Boston, Washington DC, Chicago, Colorado (Rocky Mountain National Park or take the train from Denver to Salt Lake City), and California (San Francisco, Yosemite, Napa Valley, the coast and Los Angeles). I will admit I'm leaving out the South, unless you count DC, but I'm a northern girl and as was pointed out, you're traveling in Hurricane season. ; )
It would help though to know what you're interests are. Is it pop culture? History? the Great Outdoors? Something else?
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