In case you have not noticed, Google Earth offers a new Weather layer that allows you to see cloud formations, radar depiction of precipitation, current conditions and even forecasts. To view all this, in the Layers panel, check Weather.
If you turn on the Clouds sub folder, navigate to ground level and tilt up, you can get a very cool realistic depiction of the sky (see image). Of course, this works best in a location where there is current cloud cover.
Learn more about using layers and navigating.