Billings Snowfall Totals & Accumulation Averages

How Often it Snows in Billings

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 Billings, 2010 to 2019

Days		Inches	Centi­metres
3.2	January	12.5	31.7
4.7	February	14.5	36.8
2.1	March	5.5	14.0
1.5	April	5.0	12.6
0.3	May	0.7	1.8
0.1	September	0.2	0.4
0.7	October	2.5	6.5
2.5	November	8.8	22.4
3.6	December	13.5	34.3
18.7	Year	63.2	160.6

30-year snowfall averages at Billings, 1991 to 2020

Days		Inches	Centi­metres
6.8	January	10.6	26.9
7.0	February	9.1	23.1
6.4	March	8.2	20.8
4.2	April	7.5	19.1
0.8	May	0.9	2.3
0.2	September	0.3	0.8
2.5	October	4.5	11.4
4.4	November	6.5	16.5
6.5	December	9.8	24.9
38.8	Year	57.4	145.8

These averages don't show how much the snowfall in Billings varies from year to year.

In December, for instance, one in four years totals over 13.7 inches of snow. Another 25 percent of years receive less than 3.7 inches for the month.

Similarly in January, fresh snowfall in the heaviest years amounts to over 15.6 inches, while the lightest years get less than seven inches.

New snow for February ranges from over 11.5 inches in heavy snowfall years to under 2.4 inches in light years.

When Billings Has Its First & Last Snowfalls

The first snowfall of winter for Billings most often arrives in October. Less commonly October remains free of snow or it starts snowing in September.

The snow season ends most often in April or sometimes May.

Billings is normally free of snow every year from June to August.

How Many Snowstorms Billings Gets

Just over half the days with snowfall in Billings amount to just a skiff, leaving less than an inch of fresh snow on the ground. For 18 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 couple times a 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 Billings 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
3.1	1.3	January	0.4	0.0
3.0	0.8	February	0.3	0.0
2.7	0.7	March	0.3	0.0
2.2	0.9	April	0.5	0.0
0.4	0.1	May	0.0	0.0
0.1	0.0	September	0.0	0.0
1.3	0.5	October	0.2	0.0
2.2	0.7	November	0.2	0.0
3.1	1.0	December	0.3	0.0
18.1	6.0	Year	2.2	0.0

How Much Snow Normally Accumulates in Billings

For more than one-third of winter days, Billings has at least an inch of snow on the ground.

The snowpack can accumulate to over five inches deep at anytime from October to April. For three days a year on average, the snow covering Billings builds up to twenty inches deep.

Average total days per month and year in Billings 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
15.8	9.2	January	4.4	0.9
9.4	5.5	February	3.6	1.0
6.6	3.6	March	1.7	0.5
2.3	1.2	April	0.6	0.0
0.2	0.0	May	0.0	0.0
0.0	0.0	September	0.0	0.0
2.0	1.1	October	0.6	0.0
6.5	2.4	November	1.0	0.3
12.4	5.9	December	3.2	0.6
55.2	28.9	Year	15.1	3.3