Allentown & Bethlehem Snowfall Totals & Accumulation Averages

How Often it Snows in Allentown & Bethlehem

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 Allentown, 2010 to 2019

Days		Inches	Centi­metres
2.4	January	11.1	28.1
3.4	February	13.2	33.5
1.6	March	7.7	19.6
0.1	April	0.4	1.1
0.1	October	0.7	1.7
0.4	November	1.7	4.2
1.3	December	3.7	9.3
9.3	Year	38.4	97.5

30-year snowfall averages at Allentown, 1991 to 2020

Days		Inches	Centi­metres
5.1	January	9.8	24.9
4.3	February	10.8	27.4
2.6	March	6.3	16.0
0.3	April	0.5	1.3
0.0	October	0.2	0.5
0.5	November	0.9	2.3
2.9	December	4.6	11.7
15.7	Year	33.1	84.1

These averages don't show how much snowfall in Allentown and Bethlehem varies from year to year.

In December, for instance, one in four years totals over 7.6 inches of snow. Another 25 percent of years receive less than 0.4 inches for the month.

Similarly in January, fresh snowfall in the heaviest years amounts to over 15.4 inches, while the lightest years get less than 2.3 inches.

Snow in February ranges from over 14.1 inches in heavy snowfall years to under 2.5 inches in light years.

When Allentown & Bethlehem Have the First & Last Snowfalls

The first snowfall of winter for the cities usually arrives in December. Although not common, in some years it starts snowing in November.

The season's last snowfall typically happens in March. Occasionally March doesn't see any new snow, or a late snowfall shows up in April.

Allentown and Bethlehem are normally free of snow every year from May to October.

How Many Snowstorms Allentown & Bethlehem Get

Half the days with snowfall in Allentown and Bethlehem result in just a skiff of less than an inch left on the ground. For eight days a year on average, the amount of new snow totals at least an inch.

Snowstorms of over five inches a day normally occur a once or twice a year. But major blizzards that dump ten inches or more in one day are rare events that don't happen every year.

Number of days per month and year on average in Allentown and Bethlehem 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
2.4	0.9	January	0.5	0.2
2.4	1.0	February	0.6	0.2
1.5	0.8	March	0.3	0.1
0.1	0.1	April	0.0	0.0
0.3	0.1	November	0.0	0.0
1.4	0.5	December	0.3	0.0
8.1	3.4	Year	1.7	0.5

How Much Snow Normally Accumulates in Allentown & Bethlehem

For about one-third of winter days, Allentown and Bethlehem have at least an inch of snow on the ground.

Typically, on a five days a year, snow covering the metropolitan area gets to ten or more inches deep.

Average total days per month and year in Allentown and Bethlehem 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
8.8	5.3	January	3.0	1.7
10.8	8.0	February	6.1	2.3
5.5	4.1	March	2.6	1.1
0.1	0.1	April	0.0	0.0
0.1	0.1	October	0.1	0.0
0.6	0.3	November	0.1	0.0
4.6	2.6	December	1.3	0.3
30.5	20.5	Year	13.2	5.4