Maybe, just as an experiment, save to your computer a list of what each website says the next ten-day forecast will be, and then compare each day as it comes to what was predicted for that day - ideally, this is all before your trip - then you'll know which one was more on the money~ I have a feeling some websites have better intel in certain locations than others, or just use better intel period, and since we don't know for sure which does, this might help you figure it out!