The US Post Office processes more than three billion Christmas cards every year.
It can be as warm as 40 degrees on the ground and still snow.
It is never too cold to snow. Snow can always fall if it is cold and there is moisture in the air.
The coldest temperature ever recorded on Earth was -128 degrees in Antarctica in 1983.
“Guinness Book of World Records” says the biggest snowflake was 8 inches by 15 inches.