The weatherman confuses me....

Countless man hours and millions of dollars have been invested in weather satellites, weather radar, and remote sensors to generate sophisticated computer models of the world's atmosphere to make detailed weather forecasts. So what do I get when I tune into the news to find out the weather?

"Tomorrow there's a chance it'll be partly cloudy with highs from mid, to upper 80's"

What the hell is "partly cloudy" supposed to mean? When is it not partly cloudy? Even if it is, or isn't, does it really matter? Does anyone really need to be reminded that it will be partly cloudy tomorrow? As ambiguous as the phrase is, they water it down even more with the word "chance." How useful is it to know that there's a chance it'll be partly cloudy on any given day (as opposed to all those other days when there isn't a chance it'll be partly cloudy)? Weather men use the phrase "partly cloudy" as a buffer every chance they get. Don't believe me? Just tune into a weather forecast. Chances are you'll hear the phrase at least 3 or more times.
When the use of the phrase "partly cloudy" has been exhausted, they turn to yet another empty phrase, or the phrase "mostly sunny" in particular.
The inverse of "partly cloudy" is "mostly sunny." So what new information have they given us? Nothing. Not a damn thing. You want to find out the weather? Look out the window.