The records on Monday and Tuesday were related to the daily high temperatures. Denver only reached 21 degrees on Monday and 18 degrees on Tuesday. It had never stayed so cold on these dates in the past so new "record coldest maximum" temperatures were set for October 28 and October 29.One final record is expected Thursday morning when the combination of clear skies, mainly light winds, and snow on the ground allows temperatures to plunge below zero along the Front Range. If the temperature manages to drop below -2° early Thursday, the all-time record low for October in Denver will be broken.  That record was set on October 29, 1917.