Atmospheric River in the Pacific Northwest and Northern Rockies this Weekend

A Pacific storm and atmospheric river will impact the Pacific Northwest states and northern Rockies this weekend, bringing locally heavy low elevations rain and heavy high elevation snow in the mountains. By Sunday over the Interior Northwest, rain combined with snowmelt will increase the risk of flood hazards. Flood Watches are in effect. Read More >

Here is a look at some climatological information for the latest snowfalls on record at Cincinnati, Columbus, and Dayton. Records of snowfall data go back to 1893 for Cincinnati, 1885 for Columbus, and 1894 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)

Latest date of measurable snowfall			May 6, 1989 (0.2 inches)
Earliest seasonal last measurable snowfall			February 11, 1919 (0.4 inches)
Latest date of 1 inch or more of snowfall			May 2, 1897 (1.5 inches)
Most snowfall on any day in May			1.5 inches (May 2, 1897)
Average date of last measurable snowfall (1981-2010)			March 25
Average date of last 1 inch or more of snowfall (1981-2010)			March 11

Columbus (data back to 1885)

Latest date of measurable snowfall			May 9, 1923 (0.3 inches)
Earlest seasonal last measurable snowfall			February 16, 1997 (0.4 inches)
Latest date of 1 inch or more of snowfall			April 30, 1908 (2.4 inches)
Most snowfall on any day in May			0.8 inches (May 7, 1989)
Average date of last measurable snowfall (1981-2010)			March 31
Average date of last 1 inch or more of snowfall (1981-2010)			March 9

Dayton (data back to 1894)

Latest date of measurable snowfall			May 9, 1923 (0.5 inches)
Earliest seasonal last measurable snowfall			February 7, 1945 (0.5 inches)
Latest date of 1 inch or more of snowfall			April 21, 1901 (3.5 inches)
Most snowfall on any day in May			0.5 inches (May 9, 1923)
Average date of last measurable snowfall (1981-2010)			March 29
Average date of last 1 inch or more of snowfall (1981-2010)			March 9