...September 22 in Metro Denver weather history...
20-22 In 1902, a thunderstorm on the 20th, in advance of an
apparent cold front, produced rain, hail, and northwest
winds to 40 mph with gusts to 48 mph. Widespread rain
developed behind the cold front and totaled 3.21 inches
from the evening of the 20th through the early afternoon
of the 22nd. The 2.70 inches of precipitation recorded
from 800 PM on the 20th to 800 PM on the 21st is the
greatest 24 hour precipitation ever recorded in the
month of September. The temperature dipped from a high
of 80 degrees on the 20th to a high of only 51 degrees
on the 21st.
21-22 In 1870, strong winds occurred in the foothills and in
Boulder and Denver.
In 1895, rain changed to snow overnight and totaled 11.4
inches in downtown Denver. This was the first snowfall
of the season and the second heaviest first snowfall of
the season on record. North winds were sustained to 27
mph with gusts to 30 mph on the 21st.
22 In 1913, a thunderstorm produced northwest winds sustained
to 40 mph with gusts to 44 mph.
In 1946, a trace of snow fell in downtown Denver. This
marked the start of the longest snow season on record,
263 days through June 11, 1947, when a trace of snow