High heat and humidity can only last for so long.  Eventually the atmosphere needs to clear it all out.  As the sunshine disappeared, the air stilled and the clouds moved in.  There was just a line of light on the far shoreline, but the rest of the sky was filled with billowing clouds – grey and dark.  Their reflection in the eerie calm of the lake seemed ominous.  A few minutes later the rain started in big drops, the wind picked up, and the rain became steady giving us the much-needed moisture.