Decoding the weather forecast

Quick pop quiz: When the Weather Channel says, "50% chance of rain", what do you think? The actual correct answer is "a 50% chance of rain where you are".

Here, we think it means something like:
A: It's going to rain half the day, generally that half when you're outside.
B: If you're outside, you'll only get wet half of the time.
C. If you're outside and the wind is blowing as hard as usually does, you'll only get half-wet.
D. Our weather guys were on strike, protesting, hungover or any/all and so our forecast is 50% guess, and 50% wild-ass guess.

Consider these pictures of our partly-cloudy, 50% chance of rain day.

Here's how it started at about 10:30. 

Then things start getting, uh, interesting.

Oh, yeah, here's that 50%: it's 100% on our heads..

Until finally, we just embraced the badly-dressed drowned rat experience.