Southern Ontario Snow Storm Forecast 2025 Season. A highly impactful winter storm packing up to 40 centimetres of snow is expected to wallop the capital region starting wednesday evening, environment canada says.there are. Southern ontario is in the midst of a potent winter storm, with conditions rapidly deteriorating through wednesday overnight.
Snowfall rates of 5 cm per hour could impact areas. Temperate is on tap for most of the.