November 2018 featured much below normal temperatures and above normal snowfall in Nederland, Colorado, and the surrounding Front Range Foothill communities. The average temperature for the month was 27.9 F which is 4.4 F below the normal of 32.3 F. The highest temperature was 49.3 F on November 14th and the lowest temperature was 0.4 F on November 12th. Snowfall totaled 16.2 inches – 4.6 inches above the normal of 11.6 inches. Liquid precipitation was near normal at 0.78 inches. The largest snowfall was 12.5 inches on November 11th and 12th.
A persistent ridge of high pressure positioned over the United States West Coast for the first three weeks of November kept the Central and Southern Rockies under a generally northwest flow which allowed cooler air masses and precipitation to flow across much of central and northern Colorado. During the month, overnight lows were persistently below freezing, and this combined with the low November sun angle allowed snow to remain on the ground particularly on the wooded northern sides of ridges.