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.
Related Regions: Colorado, United States, North America, Summit County. Check out the current Keystone weather conditions, including snow totals and wind speeds, along with a forecast for the next 10 days. Find base and summit temperatures in addition to any snow predicted for each day. For more Keystone weather information, click the Hour By Hour and Long Term Forecast tabs.