I can't believe that I am actually having to post this; however, can anyone give me a guideline on how just how accurate this alternate racial spell-like ability is supposed to be.
The description says:
"Sylphs with this trait can spend a full-round action to predict the weather in an area for the next 24 hours. The sylph's prediction is always accurate, but cannot account for spells or supernatural effects that might alter the forecast."
I am almost embarrassed to ask about this, but I recently got into a stupid argument with 3 of my players, all of whom seemed to feel that, since it's a "magic" ability, the sylph PC should be able to know exactly what the weather is going to be--including the exact duration and intensity. They feel that the sylph would know that it will start raining at precisely 11:01 am, and end at precisely 11:42 am.
Any assistance here, beyond the usual "my campaign--my rule interpretation" argument, would be very much appreciated.