"Cold" is a relative term.  

Use the handy list below to overcome the confusion. Degrees (Fahrenheit)
65

Hawaiians declare a two-blanket night
60

Californians put on a sweater (if they can find one)
50

Miami residents turn on the heat
45

Vermont residents go to outdoor concerts
40

You can see your breath
Minnesotans go swimming
Californians shiver uncontrollably
35
 Italian cars don't start
32
 Water freezes
30
 You plan your vacation to Australia
25
 Ohio water freezes
Californians weep pitiably
Minnesotans eat ice cream
20

Politicians begin to talk about the homeless
New York City water freezes
Miami residents plan vacation further South
15

French cars don't start
Cat insists sleeping in bed with you
10

You need jumper cables to get the car going
5

American cars don't start
0

Alaskans put on T-shirts
- 10

German cars don't start
Eyes freeze shut when you blink
-15 You can cut your breath and use it to build an igloo
Arkansans stick tongue on metal objects
Miami residents cease to exist
-20

Cat insists on sleeping in pajamas with you
Politicians actually do something about the homeless
Minnesotans shovel snow off the roof
Japanese cars don't start
-25

Too cold to think
You need jumper cables to get the driver going
-30 You plan a two week hot bath
Swedish cars don't start
-40

Californians disappear
Minnesotans button the top button
Canadians put on sweaters
Your car helps you plan a trip South
-50

Congressional hot air freezes
Alaskans close the bathroom window
-80

Hell freezes over
Polar bears move South
Viking Fans order hot cocoa at the game
-90

Lawyers put their hands in their own pockets