National Weather Service United States Department of Commerce


Here is a look at some climatological information for the earliest snowfalls on record at Cincinnati, Columbus, and Dayton. Continuous records of snowfall data in autumn go back to 1893 for Cincinnati, 1885 for Columbus, and 1911 for Dayton. Note that the term "measurable" denotes snowfall that is equal to or greater than a tenth of an inch.

 
Cincinnati (data back to 1893)
Earliest date of measurable snowfall October 19, 1989
(5.0 inches)
Earliest date of 1 inch or more of snowfall October 19, 1989
(5.0 inches)
Most snowfall on any day in October 5.9 inches
(October 30, 1993)
Most snowfall on October 31st 0.3 inches (1993)
Number of times measurable snow has fallen on October 31st Once (1993)
Average date of first measurable snowfall (1981-2010) November 29
Average date of first 1 inch or more of snowfall (1981-2010) December 15


 
Columbus (data back to 1885)
Earliest date of measurable snowfall October 10, 1906
(0.1 inches)
Earliest date of 1 inch or more of snowfall October 22, 1925
(1.0 inches)
Most snowfall on any day in October 3.6 inches
(October 30, 1993)
Most snowfall on October 31st 1.0 inches (1993)
Number of times measurable snow has fallen on October 31st Twice (1993,1954)
Average date of first measurable snowfall (1981-2010) November 20
Average date of first 1 inch or more of snowfall (1981-2010) December 12


 
Dayton (data back to 1911)
Earliest date of measurable snowfall October 18, 1989
(0.2 inches)
Earliest date of 1 inch or more of snowfall October 19, 1989
(4.8 inches)
Most snowfall on any day in October 4.8 inches
(October 19, 1989)
Most snowfall on October 31st 0.4 inches (1993)
Number of times measurable snow has fallen on October 31st Once (1993)
Average date of first measurable snowfall (1981-2010) November 24
Average date of first 1 inch or more of snowfall (1981-2010) December 8