Hamilton Snowfall Totals & Accumulation Averages

This page pulls together information on when, how much and how often Hamilton, Ontario has snow.

There are data and descriptions here of how many days it snows and the total amount of snowfall that Hamilton usually gets. There are also monthly and yearly counts of the days that Hamilton normally has heavy snowstorms and deep snow accumulated on the ground. Plus there's information on when the city can expect its first and last snowfalls of the season.

All the numbers are long-term historical averages based on weather data gathered from 1981 to 2010 at Hamilton's Royal Botanical Gardens.

How Often it Snows in Hamilton

This first table lists monthly and yearly totals for amount of snow and how many days it snows at least 0.2 centimetres (0.08 inches).

Average total snowfall and days with fresh snow in Hamilton
Days   Inches Centi­metres
10.5 January 12.8 32
8.6 February 12.3 31
4.9 March 7.2 18
1.2 April 1.1 3
2.6 November 2.9 7
8.4 December 10.2 26
36.2 Year 46.5 118

When Hamilton Has Its First & Last Snowfalls

The first snowfall of winter for Hamilton often arrives in November, but can show up as early as October.

The season's last snowfall typically happens in March or April, although in some years a late snow lands in May.

Hamilton is normally free of snow every year from June to September.

How Many Snowstorms Hamilton Gets

Most days of snowfall in Hamilton leave less than five centimetres (2 inches) of fresh snow on the ground. For eight days a year on average, the amount of new snow totals at least five cm.

Big snowstorms of over ten cm a day normally occur three times a year. But major blizzards that dump 25 cm or more in one day are rare events that don't happen every year. Storms this severe are most likely to appear in January or February.

Number of days per month and year on average in Hamilton with a total snowfall of at least 5, 10 or 20 centimetres
  5 cm
2.0 inches
10 cm
3.9 inches
25 cm
9.8 inches
January 1.9 0.8 0.1
February 1.8 0.9 0.1
March 1.6 0.5 0.0
April 0.2 0.1 0.0
November 0.4 0.2 0.0
December 1.9 0.5 0.0
Year 7.8 2.9 0.2

How Much Snow Normally Accumulates in Hamilton

For about 74 days a year, Hamilton has at least a centimetre of snow on the ground. In mid-winter the snowpack averages five cm deep. Snow builds up the most snow in February when it's typically nine cm deep.

Average total days per month and year in Hamilton with snow depth of at least 1, 5, 10 or 20 cm on the ground
1 cm
0.4 inches
5 cm
2.0 inches
  10 cm
3.9 inches
20 cm
7.9 inches
22.6 13.9 January 6.3 0.8
20.0 14.6 February 11.0 6.5
14.4 8.3 March 5.9 2.8
2.0 0.7 April 0.2 0.0
1.8 0.6 November 0.1 0.0
13.4 7.1 December 4.1 0.3
74.2 45.1 Year 27.6 10.4

Environment Canada. Meteorological Service of Canada. Canadian Climate Normals. 1981-2010 Climate Normals & Averages.

Environment Canada. National Climate Data and Information Archive. Canadian Climate Normals or Averages 1971-2000.

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