Winter Storm Warnings in St. John's, Newfoundland and Labrador
St. John's sits on the exposed northeastern tip of Newfoundland, where Atlantic storm systems funnel directly into the city with little geographic relief. The result is one of the snowiest urban climates in Canada, averaging 225.4 cm (88.7 inches) of snowfall per year based on data spanning 2012 through 2024. The bulk of that accumulation arrives between January, February, and March, when moisture-laden coastal lows collide with arctic air pushing down from Labrador.
Despite the impressive seasonal totals, genuinely intense single-day events are less common than the cumulative numbers might suggest. St. John's sees roughly 1.7 heavy-snow days per year on average, with truly major snowfall events occurring closer to 0.5 times annually — about once every two years. Winter overnight lows average −4.2 °C (24.5 °F), meaning snow often falls near the freezing mark and can quickly transition to ice pellets or freezing rain, complicating travel even when raw snowfall totals appear modest.
A winter storm warning for St. John's signals that conditions are expected to become dangerous enough to significantly disrupt travel and public safety. Environment and Climate Change Canada sets warning thresholds that differ by region across the country, so the criteria applied here reflect local climatology rather than a single national standard. When a warning is issued, residents should treat it seriously — even storms that fall short of record totals can cause serious hazards on the city's hilly streets and exposed coastal roads.
| Years analyzed | 13 winters (2012–2024) |
|---|---|
| Avg. annual snowfall | 225.4 cm (88.7 in) |
| Snowiest months | January, February, March |
| Avg. winter overnight low | −4.2°C (24.5°F) |
| Heavy-snow days per year | 1.7 |
Climatology figures are approximate estimates for the period shown and may differ from official local records.
Watch vs warning: a winter storm watch means a major storm is possible in St. John's within 12–48 hours (be prepared); a winter storm warning means it is happening or about to (take action now). For full definitions, see the complete winter storm warning guide.
St. John's winter storm FAQ
Is there a winter storm warning in St. John's right now?
The live status at the top of this page shows whether a winter storm warning, watch, or advisory is currently in effect for St. John's, Newfoundland and Labrador. It checks live forecast and alert data automatically and refreshes every time the page loads.
Does St. John's get winter storm warnings often?
St. John's sees heavy snow routinely, and winter storm warnings are a regular feature of its winters. The frequency varies year to year with the track of major storm systems.
How much snow triggers a winter storm warning in St. John's?
Environment and Climate Change Canada (ECCC) issues winter warnings on criteria that vary by region and expected impact: how much snow or ice is forecast, over what period, and how disruptive it is likely to be for the area. There is no single fixed snow total.
What should I do during a winter storm warning in St. John's?
Avoid travel if possible, stay indoors and keep warm, prepare for power outages, keep an emergency kit, and check on elderly or vulnerable neighbours. Follow guidance from Newfoundland and Labrador authorities and Environment and Climate Change Canada (ECCC).
Winter storm warnings in nearby locations
- Winter storm warning in Gander, NL
- Winter storm warning in Sydney, NS
- Winter storm warning in Charlottetown, PE
- Winter storm warning in Halifax, NS
- Winter storm warning in Moncton, NB
- Winter storm warning in Saint John, NB
See all locations, read the latest winter weather news, or the full winter storm warning guide. Definitions follow Environment and Climate Change Canada (ECCC) criteria; thresholds vary by region.