That snowflake icon on your smartphone app might be quick and handy — it just might not be as accurate as a human when the weather gets rough.

An intense and nearly historic weather pattern is cooking much of America in a dangerous heat dome this week with triple-digit heat that hasn’t been seen in some places in more than a decade.

The vast majority of Americans are about to get an extended taste of frigid Siberian weather.

Where do these crazy weather terms come from, and are they legit?