A Vulcan lute on Aldea. The Vulcan lute (sometimes referred to as Vulcan harp, Vulcan lyre, or Vulcan Lyrette) was a twelve-stringed instrument, played on the planet Vulcan, that was tuned on a diatonic scale and noted to be very soothing.
Keystone Average Weather. 1  The highest monthly average temperature in Keystone for July is 54 degrees. 2  The lowest monthly average temperature in Keystone for December is 14 degrees.  The most monthly precipitation in Keystone occurs in January with 0 inches.
9am:The Keystone, CO forecast for Apr 14 is 47 degrees and Sunny. There is 38 percentage chance of rain and 5 mph winds from the West-Southwest. 12am:The Keystone, CO forecast for Apr 14 is 54 degrees and Sunny. There is 24 percentage chance of rain and 8 mph winds from the West.