What does it actually mean when someone says "There's a 30% chance of rain in New York today"?
- For every 10 days like today, it will rain on 3 of the days
- It will rain for 30% of the day, on average, in New York
- It will rain on 30% of New York at some point in the day
- The volume of rain that will fall in New York will be 30%