Chimpie:
JetJockey75 forgot to mention to you that while you DO have sea breezes, (more on the Atlantic side of Florida than where you are on the Gulf. I LIVED in Fla for over 22 yrs!) one thing you'd notice different about Tupelo is the [i]change of seasons, which you have virtually NONE of in SW Florida!!!

I lived over in St. Lucie County, and I do NOT miss it! Mississippi has 4 hot months, June/July/August/September, with August being the obvious WORST! I WILL agree that the big oak trees here cut the temp down at LEAST 20F! If you're looking at Tupelo, remember that it's in NE Miss'ippi, and SNOW is NOT uncommon!!! Something you wouldn't see in Sarasota, except MAYBE ever 100 yrs or so?!! Best of luck to you in your moving decisions!
http://www.visitmississippi.org/ Try that website to order a Visitor's Guide. It will give you a good overview of the Magnolia State! YEE-HAW!!! LOL!
