The weather.com forecast usually includes an hourly probability of rain, 0%, 10%, 20% etc. My question is whether this probability is hourly only. So for example, if for each hour for the next 3 hrs it says "20% probability of rain" does that imply that the probability for rain sometime over the next three hours is 48.8%? (1 - [0.8*0.8*0.8]) Or is that just short hand for "20% probability of rain for the next few hours"?
Guy