You should always ensure there is a shady part of the cage and water for the bird. Generally if a bird is overheating, it will start to pant with it's beak open. If this happens - get it inside immediately.
when it is hot outside
a simili for hot weather is " it's freezing hot outside"
yes they can if they are in side the house
weather maps provide info like if storms are coming or if the weather outside is hot or cold.
The weather is blazing hot outside today.
It likes you! It really likes you!
They do it when the weather outside is hot, they just exercised, or they're excited.
The ability to perspire.
It is hot is "il fait chaud" (the weather is hot, it is hot outside, etc..) or "c'est chaud" (about your food for instance)
It depends on what the weather is outside and how developed the air conditioner is. if it's hot out it may take a while to get cool or if it is scorching hot outside it may not get cold at all.
Alcohol dehydrates you
I expected cooler weather, but instead it was hot outside. I like iced tea, but my friend thinks it tastes better hot.