Denver, CO went from summer to winter within 24-hours yesterday as sunny highs of 83ºF plummeted to 19ºF and 5″ of fresh snow, overnight. Even for Denver, this transition is pretty rough.
In fact, the 64º swing, in what was actually 18-hours, made it Denver’s largest October change on record and rivals the biggest swing ever recorded in any month, set in 1872. The snow that fell was also the most October snowfall for 147-years.
Meteorologist Russell Danielson told the Washington Post: ‘That’s our largest one-day temperature change in October on record. We tell people around here to dress in layers, because sometimes you get summer and winter in the same day.’
Denver was two degrees away from breaking the all-time temperature drop record of 66 degrees that occurred on January 25, 1872.
The chilly weather is expected to remain into the early weekend.
This is the most snowfall in October for Denver specifically. Not Boulder, which is shown in the first image. Not stating as record setting snowfall in October for Boulder, although this link shows October snow storm with a larger snowfall recorded: https://www.dailycamera.com/2009/10/29/boulder-snow-total-at-23-inches-storm-moving-out/