You know it's hot out when

[SumLightCat]

You know it's hot when ... aww ... heck. It's not hot here. The orange juice I left in the car yesterday was fine for drinking today at noon.

 

[Zeb_Carter]

You know it's hot when the sky starts to cry...

 

[OhMissScarlett]

You know it's hot when the neighbor's dog shows up daily to sleep in the air conditioning.

 

[indecisiviously]

...when the ice cream I purchased today melted in twenty minutes, leaving a soon to be smelly catastrophe in my trunk.