A rather lame statement. The difference has to do with long term averages versus short term fluctuations, and not so much to do with expectations. One expects a .300 batting average hitter to get hits in most games, AND to go 0 for 4 once in a while.

Climate is the average of weather over a long period of time.

So if I was going to Hawaii, being that it's climate is known to be warm... I would EXPECT warm weather.

But there could be a situation that would cause it to be cooler than expected... and that would be THE WEATHER.

So taken in the right context the statement: "Climate is what you expect, but weather is what you get"

Is somewhat valid.

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The accuracy depends on where you are. Imagine a place where every day is either 100 degrees or 30 degrees, if you know from a study of climate that the average temperature is 65, you might expect--but you would never get it.

It′s just a statement supposed to be funny.

Actually it′s more the other way round:

If you monitor the weather for a longer period like 30 or 50 years or more then you get the climate

Very simplistic statement. You expect it to be hot in the summer and cold in the winter. But you often get warm spells in winter and a rare cold spell in summer.