Winter Storm Warning in London, ON

Check whether a winter storm warning is in effect in London, Ontario right now. The live status below pulls active warnings, watches and advisories and shows current conditions and a 7-day snow forecast for London. London sees significant snowfall in most winters, and winter storm warnings are issued in a typical season.

Content reviewed · live status updates automatically · by the Winter Storm Warning editorial team

As of 3:45 AM GMT-4, no winter storm warning is in effect for London, Ontario. The computed winter-storm risk is 0/100 (Low) — no significant winter hazards in the next 48 hours.

Currently 14°C, feels like 14°C, wind 7 km/h, clear sky.

Next 7 days in London, Ontario: highs 21–30°C, lows 12–18°C with little or no snow expected.

Live snapshot as of 3:45 AM GMT-4 · readings refresh automatically below.

Current Conditions

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Next 24 Hours

7-Day Snow & Temperature Forecast

What To Do Now

    Important: the risk index is a forecast estimate, not an official warning. Official winter storm warnings come only from Environment and Climate Change Canada (ECCC). Always follow local authorities.

    Winter Storm Warnings in London, Ontario

    Tucked in southwestern Ontario between Lakes Huron and Erie, London sits in a corridor that funnels cold Arctic air and lake-effect moisture across the region every winter. Over the 13-year period from 2012 through 2024, the city averaged 104.1 cm (41.0 inches) of snowfall annually — a meaningful accumulation that keeps residents and emergency managers alert from late autumn through early spring.

    The heaviest snowfall concentrates in January, February, and December, when average winter overnight lows hover around −6.6 °C (20.1 °F). At those temperatures, falling snow stays dry and wind-driven, reducing visibility quickly and making roads treacherous within minutes of a storm's arrival.

    A winter storm warning for London signals that hazardous conditions are either occurring or imminent — typically involving significant snowfall, blowing snow, or a combination of both that poses real danger to travel and outdoor activity. It is worth noting that warning thresholds are not uniform across Canada; Environment and Climate Change Canada sets region-specific criteria, so the snowfall amount that triggers a warning here may differ from thresholds used in northern Ontario or the Prairie provinces.

    When a warning is issued for the London area, residents should avoid unnecessary travel, prepare an emergency kit, and monitor updates from Environment Canada closely until the system passes.

    Years analyzed13 winters (2012–2024)
    Avg. annual snowfall104.1 cm (41 in)
    Snowiest monthsJanuary, February, December
    Avg. winter overnight low−6.6°C (20.1°F)
    Heavy-snow days per year0

    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 London 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.

    London winter storm FAQ

    Is there a winter storm warning in London 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 London, Ontario. It checks live forecast and alert data automatically and refreshes every time the page loads.

    Does London get winter storm warnings often?

    London sees significant snowfall in most winters, and winter storm warnings are issued in a typical season. The frequency varies year to year with the track of major storm systems.

    How much snow triggers a winter storm warning in London?

    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 London?

    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 Ontario authorities and Environment and Climate Change Canada (ECCC).

    Winter storm warnings in nearby locations

    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.