DENVER, COLORADO — As the calendar turns toward autumn, NOAA data compiled by AccuWeather shows Denver holds the record for one of the earliest first snowfalls ever recorded among major US cities, with measurable snow falling on September 3, 1961, more than two months ahead of when most of the country typically sees its first flakes.
Northern Plains and Rockies Lead With Earliest Snowfall Dates
The earliest recorded first snows cluster heavily across the Northern Plains and Rocky Mountain West. Great Falls, Montana, recorded its earliest first snow on September 10, 1921, while International Falls, Minnesota, saw snow as early as September 14, 1964. Bismarck, North Dakota, followed close behind at September 16, 1965, and Rapid City, South Dakota, and Jackson, Wyoming, both recorded early snow on September 13, in 1970…