Mt Whitney Zone Forums General Discussion Contradicting info between NOAA and mountain-forecast

Hello
I am planning to camp at Outpost on this Saturday, Sep 9 and do the summit hike on Sunday Sep 10.

NOAA says sunny Saturday and slight chance of rain on sunday afternoon.

mountain-forecast says the complete opposite. Clear sunday, but snow showers on Saturday.

And NOAA reports keep changing every few hours.

To make it worse, once I reach outpost, I will not have any way to find the latest weather changes.

Just wanted to hear experts advice on how to follow this changing weather pattern.

Thanks,
sankar