Antioch Snowfall Totals & Accumulation Averages
This page pulls together information on when, how much and how often Antioch, Illinois has snow.
There are data and descriptions here of how many days it snows and the total amount of snowfall that Antioch usually gets. There are also monthly and yearly counts of the days that Antioch normally has heavy snowstorms and deep snow accumulated on the ground. Plus there's information on when Antioch can expect the first and last snowfalls of the season.
All the numbers are averages, based on climate data gathered from 1981 to 2010 in central Antioch.
How Often it Snows in Antioch
Antioch is one of the snowiest places in Illinois, based on the total inches of snowfall it receives in a year.
This first table lists monthly and yearly totals for amount of snow and how many days it snows at least 0.1 inches (0.25 centimetres).
These averages don't show how much Antioch's snowfall varies from year to year.
In December, for instance, one in four years totals over 17 inches of snow. Another 25 percent of years receive less than 3.9 inches for the month.
Similarly in January, fresh snowfall in the heaviest years amounts to over 14.7 inches, while the lightest years get less than 4.5 inches.
Snow in February ranges from over 13.7 inches in heavy snowfall years to under 2.1 inches in light years.
When Antioch Has Its First & Last Snowfalls
Over the long-term Antioch has averaged an inch and a half of fresh snow during the months of April and November.
But in most years April actually gets no snow. Just one-quarter of years get 1.4 inches or more of snow in April. About half of Novembers receive at least half an inch of snow.
Antioch's first snowfall of winter usually arrives in November. The season's last snowfall typically happens in March.
Antioch is normally free of snow every year from May to October.
How Many Snowstorms Antioch Gets
About half the days with snowfall in Antioch leave just a skiff of less than an inch on the ground. For an average of 12 days a year, at least an inch of snow lands in one day.
Snowstorms of over five inches a day normally occur a couple times a year. But major blizzards that dump ten inches or more in one day are rare events.
How Much Snow Normally Accumulates in Antioch
For over half of winter days, Antioch has at least an inch of snow on the ground.
Snow mostly accumulates during January. Typically, on four or five days in January and another three or four in February, the snow covering Antioch gets to ten or more inches deep.
National Climatic Data Center. NOAA's 1981-2010 Climate Normals.