Dayton Snowfall Totals & Accumulation Averages

How Often it Snows in Dayton

The next two tables list monthly and yearly totals for amount of snow and how many days it snows at least 0.1 inches (0.25 centimetres).

10-year snowfall averages at Dayton, 2010 to 2019

Days		Inches	Centi­metres
2.7	January	8.8	22.3
2.3	February	7.2	18.4
1.4	March	4.2	10.6
0.3	April	0.6	1.4
0.1	October	0.2	0.4
0.4	November	1.1	2.7
1.8	December	5.2	13.2
9.0	Year	27.2	69.0

30-year snowfall averages at Dayton, 1991 to 2020

Days		Inches	Centi­metres
4.1	January	6.9	17.5
2.3	February	1.5	3.8
0.8	March	1.7	4.3
0.0	April	0.0	0.0
0.0	October	0.0	0.0
0.2	November	0.1	0.3
2.3	December	2.1	5.3
9.7	Year	12.3	31.2

These averages don't show how much Dayton's snowfall varies from year to year.

In December, for instance, one in four years totals over 2.2 inches of snow. Another 25 percent of years receive less than 0.3 inches for the month.

Similarly in January, fresh snowfall in the heaviest years amounts to over 12.2 inches, while the lightest years get less than 1.9 inches.

Snow in February ranges from over 1.2 inches in heavy snowfall years to under 0.1 inches in light years.

When Dayton Has Its First & Last Snowfalls

Dayton's first snowfall of winter usually arrives in December. In rare years, it starts snowing as early as November.

The season's last snowfall can happen in February or more often March.

Dayton is normally free of snow every year from April to October.

How Many Snowstorms Dayton Gets

About half the days of snowfall in Dayton result less than an inch left on the ground. For five days a year on average, the amount of new snow totals at least an inch.

Snowstorms of over five inches a day don't occur every year. Major blizzards that dump ten inches or more in one day are not expected here.

Number of days per month and year on average in Dayton with a total snowfall of at least 1, 3, 5 or 10 inches

1 inch 2.5 cm	3 inches 7.6 cm		5 inches 12.7 cm	10 inches 25.4 cm
2.2	0.4	January	0.1	0.0
1.0	0.3	February	0.1	0.0
0.6	0.2	March	0.0	0.0
0.0	0.0	April	0.0	0.0
0.0	0.0	November	0.0	0.0
1.1	0.2	December	0.1	0.0
4.9	1.1	Year	0.3	0.0

How Much Snow Normally Accumulates in Dayton

For only a small fraction of winter days does Dayton have at least an inch of snow on the ground.

Typically on five days a year the snow covering Dayton gets to five or more inches deep.

Average total days per month and year in Dayton with snow depth of at least 1, 3, 5 or 10 inches on the ground

1 inch 2.5 cm	3 inches 7.6 cm		5 inches 12.7 cm	10 inches 25.4 cm
9.4	4.1	January	2.5	0.6
5.1	2.6	February	1.7	0.1
1.8	0.7	March	0.4	0.0
0.0	0.0	April	0.0	0.0
0.1	0.0	November	0.0	0.0
5.3	2.4	December	0.6	0.0
21.7	9.8	Year	5.2	0.7