Winter Weather Forecast 2025 2025 Ontario. ”’temperate’ is on tap for most of the country this winter, but let it snow. Ontario’s winter will be filled with a whirlwind of both snow and rain while the best chances of a white winter being in the prairies.

The almanac predicts a “heart of cold” winter for ontario and eastern manitoba. The coldest periods will be in early december, early and late january, and late february.