Here we go again... I don't know why so many people use Mountain-Forecast.com. It ALWAYS over-predicts snow and rain!

Please go to the NOAA weather site to get a more realistic forecast. It's the first one on the Mt Whitney Weather page, link is always in the box to the left.

You should watch the forecast closely before you go, and with NOAA's 20% chance of rain prediction, definitely carry rain gear. It most likely will NOT be "snow/heavy rain all weekend".