What's the difference between 'Partly Sunny' and 'Mostly Cloudy'?

Partly sunny? Or Mostly cloudy? Sounds like the can be interchangeable but the National Weather Service has specific definitions on each term used to describe cloud cover.

Weather Terms You've Heard, But Probably Don't Know What They Mean

Heather's Weather Whys: What's the difference between partly sunny and partly cloudy?

Intro Guide Part One: Mostly Sunny vs Partly Cloudy – janesweather

Mostly cloudy skies tonight, windy conditions with a few remaining showers

Why do people say partly cloudy and partly sunny like they're not the same thing? - Quora

🔴 Moving to the Cloud. Mostly cloudy or partly sunny?

Do Partly Cloudy And Partly Sunny Mean The Same Thing? See How The National Weather Service Defines All Forms Of Cloud Coverage In The Sky

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Weather: Dreary and mostly cloudy

What Determines Partly Cloudy vs. Mostly Sunny? (And Other Weather Terms Explained)

WTF Fun Fact - Okta

Tim Leishman (@Leishman82) / X

Matt's Weather Spot: Partly Cloudy vs. Partly Sunny

What's the difference between 'partly sunny' and 'mostly cloudy'?