I wouldn't worry about it. When we went there earlier this spring before we left I checked on weather.com every day. Each time it was different. Then when we got there, the forecast was different from what we originally saw before we got there. By the middle of our stay we just said the heck with it because the weather man wasn't too accurate either. Just take some of those rain ponchos with you from the dollar store in your back pack. It'd rain, sun, sprinkle, rain sun, sprinkle...lol...we'd never know what was next.