what I don't get is how the percentages add up. It might say 30% chance of showers on monday, and then if you go to the detailed, it says something like 20% chance of showers in the morning and 20% chance of showers in the afternoon. And then if you go to the hourly it says 10% chance of showers every hour until 30% chance of showers in the afternoon. If you know how to add probabilities in series, it quickly becomes obvious that the hourly pops don't add up to the daily pop.