Saint John Snowfall Totals & Accumulation Averages
This page pulls together information on when, how much and how often Saint John, New Brunswick has snow.
There are data and descriptions here of how many days it snows and the total amount of snowfall that Saint John usually gets. There are also monthly and yearly counts of the days that the city 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.
The first set of monthly snow totals are averages for 2010 to 2019. All the other numbers are long-term historical averages based on weather data gathered from 1981 to 2010 at the Saint John Airport.
How Often it Snows in Saint John
| Inches | Centimetres | |
|---|---|---|
| January | 23.5 | 60 |
| February | 30.9 | 78 |
| March | 18.3 | 47 |
| April | 3.1 | 8 |
| May | 0.1 | 0 |
| October | 0.0 | 0 |
| November | 0.0 | 0 |
| December | 15.6 | 40 |
| Year | 91.5 | 232 |
| Days | Inches | Centimetres | |
|---|---|---|---|
| 12.9 | January | 25.3 | 64 |
| 10.2 | February | 19.0 | 48 |
| 9.4 | March | 17.5 | 44 |
| 5.1 | April | 7.9 | 20 |
| 0.5 | May | 0.5 | 1 |
| 0.5 | October | 0.2 | 1 |
| 3.9 | November | 4.3 | 11 |
| 10.2 | December | 19.6 | 50 |
| 52.6 | Year | 94.3 | 240 |
When Saint John Has Its First & Last Snowfalls
The first snowfall of winter for Saint John usually arrives in November, but can show up as early as October.
The season's last snowfall typically happens in April although in some years a late snow lands in May.
Saint John is normally free of snow every year from June to September.
How Many Snowstorms Saint John Gets
Most days of snowfall in Saint John leave less than five centimetres (2 inches) of fresh snow on the ground. For 16 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 seven or eight 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 December or January.
| 5 cm 2.0 inches |
10 cm 3.9 inches |
25 cm 9.8 inches | |
|---|---|---|---|
| January | 4.1 | 2.0 | 0.2 |
| February | 3.5 | 1.6 | 0.1 |
| March | 2.6 | 1.6 | 0.1 |
| April | 1.5 | 0.5 | 0.0 |
| May | 0.1 | 0.0 | 0.0 |
| November | 0.6 | 0.2 | 0.0 |
| December | 3.5 | 1.6 | 0.2 |
| Year | 15.9 | 7.5 | 0.6 |
How Much Snow Normally Accumulates in Saint John
For about 95 days a year, Saint John has at least a centimetre of snow on the ground. In mid-winter the snowpack averages around 15 cm deep. The snow is often at its deepest in February.
| 1 cm 0.4 inches |
5 cm 2.0 inches |
10 cm 3.9 inches |
20 cm 7.9 inches | |
|---|---|---|---|---|
| 24.2 | 20.2 | January | 16.2 | 10.3 |
| 24.7 | 20.6 | February | 16.4 | 9.2 |
| 21.9 | 17.0 | March | 13.6 | 8.1 |
| 5.8 | 3.0 | April | 1.5 | 0.8 |
| 0.1 | 0.0 | May | 0.0 | 0.0 |
| 2.9 | 1.3 | November | 0.6 | 0.4 |
| 15.4 | 10.6 | December | 7.5 | 4.9 |
| 94.9 | 72.8 | Year | 55.8 | 33.7 |
References
Environment Canada. Meteorological Service of Canada. Canadian Climate Normals. 1981-2010 Climate Normals & Averages.
Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.