Indian Wells forecast for 2 pm is for mostly cloudy skies, 59 F./15C, winds dying down from 5 mph to 0, but a 40% chance of rain, rainfall amounts near 2.0 mm possible, and perhaps a thunderstorm.
In these conditions, the ball is probably going to continue to not bounce so high as when it is warm and sunny.
Both players have a lot of confidence and are playing well.
With these conditions, Isner won't have the advantage he had in Switzerland where the ball was bouncing over Federer's head.
But again, the margins are small. Anyone could win, especially if their serve gets hot.
Federer usually starts well, while Isner usually takes a bit to warm up.
In a 3 set match, a good start is a definite advantage.
I'll pick Mr. Federer in 3 sets. 6-3, 6-7, 6-4.
In any case, I hope we see a good match