Where Does the Saying “On Cloud Nine” Come From?

When you’re feeling extremely happy or blissful, you might feel you’re “on cloud nine.” But what on earth does being happy have to do with clouds? And why cloud nine? Find out!

When you’re feeling extremely happy or blissful, you might feel you’re “on cloud nine.” But what on earth does being happy have to do with clouds? And why cloud nine?

This saying, which dates back to the early 1800s, was coined during a time when clouds were a topic of conversation. It was during this time that scientists and seafarers, including amateur meteorologist Luke Howard, first began organizing clouds. By observing cloud appearance and height above ground level, they were able to categorize all clouds into the ten basic cloud types we use today: cumulus, stratus, stratocumulus, nimbostratus, cumulonimbus, altostratus, altocumulus, cirrus, cirrostratus, and cirrocumulus.

To make recording cloud observations easier, Howard and others also assigned a number from 0 to 9, to each of these ten cloud groups. According to their code abbreviations, zero represented the lowest clouds (stratus), and nine, the tallest clouds (cumulonimbus, or thunderstorm clouds). It’s from this that the expression “cloud nine” was likely born! (If you’re on cloud nine, you’ll be extremely high up, which also describes the sensation you may feel when overjoyed.)

Today’s meteorologists still learn these 0 to 9 cloud codes, but rarely ever use them. And since the numbers aren’t used in public forecasts at all, most folks don’t even know they exist and, therefore, don’t realize this is where the saying “on cloud nine” originates from.

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Tiffany Means

Tiffany Means is a freelance writer and a degreed meteorologist. She specializes in weather forecasting and enjoys making the subject of weather (and the science behind it) more relatable. She currently resides in the Blue Ridge Mountains of North Carolina.

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Mari

Oops, but bad to split the infinitive…correction: finally to know…

Mari

Tiffany, I have used this expression all my life, so good to finally know its origin. Thanks!

Bob Herndon

I appreciate that info Tiffany. I’ve been an amateur meteorologist most of my life, but didn’t know that.

L Jeanne

10 categories

John Tam

What about the 10th cloud category??

L Jeanne

0 to 9 is 10 categories(0,1,2,3,4,5,6,7,8,9); the zero counts as the first.

Chris Swanson

Thank you, Tiffany! I enjoyed (but never knew any of) that 🙂

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