River Phoenix's sister Rain posts sweet tribute on what would have been late actor's 54th ...
Rain and actor Joaquin Phoenix, star of the upcoming Joker: Folie à Deux, were also at the venue. See her post below: Related ...
An 'atmospheric river' of rain is set to hit California, but it won't make it to Arizona
Parts of northern California could see up to a foot of rain, but Phoenix will remain dry and warmer than usual.