Magnum ...
Yes, for many vegetables it is too hot. It's not the daytime temperatures, other places get into the low 90's regularly or occasionally 100F (think of Georgia or any other State in the South) but it's the night temperatures here.. Many nights it does not even drop below 80 down here in South Florida.
The further you go north in Florida, the more variation you get. We have the Gulf Stream here only about a mile or so offshore and with the ocean breeze, it tends to moderate the temperature here much more than in other parts of the country, even in other parts of Florida. That's why it typically is about 90F here during the day and upper 70's to low 80's at night. Odd to many people, in the summer, it is typically much hotter the further north you go in Florida. It is not uncommon for temperatures to reach 100F or more in Central or North Florida.There is even a debate here as to whether it has EVER reached 100 degrees here in Miami (in 1942 or something when they were building the airport it was supposedly 100 degrees downtown and 98 degrees at the new airport where technically they were not taking the official temperature there until later in the month or something).
In any case, the summers are more moderate here in the day but warmer here in the evenings (as an FYI, Key West, further south from here, has a max all-time temperature of 97 degrees). But again, it is very warm in the evenings.
For whatever reason, many vegetables like it cooler in some part of the day. Plus, with food coming from other southeastern States in the summer, I guess the prices drop and there is no real financial incentive to plant things here in the summer.
I just know that my basil goes to seed very quickly in the summers here.
Rub a Dub