First of all- THANK YOU.

Look for a tropical weight khaki, or linen pants.

You'll be fine, and look 100% better than the rest of the crowd.

Plenty of men wear long pants all the time in Florida. Log pants actually shield you from the excessive heat- and from getting a major burn.

Loose-fitting, all-cotton pants will feel just fine, not too hot. Many of them have elastic waists and big pockets. It's not true that shorts are cooler than long pants.

No one's going to care what length your pants are but you.

If you've been in Morocco, they wear pants inside their long gowns, or whatever they call those 'robes'. Our tour guide showed us what's inside of their robes, that's TO KEEP THEM insulated from the heat, and warm during winter.

They wore long jeans, riding on horses in the western world, crossing mountains (in all movies that I've seen), filmed I'm sure in California, and hats (to shield cowboys from the sun), and bandana around their necks, to trap sweats.

So, it's not crazy to wear pants in 90° F weather.

BTW: in Oregon, people think it's crazy to have an umbrella during summer, (remarks loudly saying: Is it going to rain today?") to keep me cool & protected from the heat! I also had Discoid Lupus, took 12 years for them to fade off my chin. I didn't need to explain to people, I didn't care what they think. Now, more & more people are concern about melanoma, and bring their umbrellas, and I've carried my umbrella for decades!

DO YOU! Ignore what they say or think! You're more important, than them.

Just wear a light material pants, no one will think you are crazy

Wear what you want and OWN IT! No one cares how you look, you should just feel comfortable. Plus, also prefer pants.