Toronto experiences a humid continental climate with four distinct seasons, ranging from hot, humid summers to cold, snowy winters.

Precipitation falls year-round with no true dry season, though spring and autumn see particularly unpredictable rainfall that demands layering flexibility.

Summer temperatures regularly hit 25-30°C with high humidity, while winter routinely drops to -10°C or colder, with wind chill making it feel considerably worse.

Lake Ontario moderates extreme temperature swings somewhat but contributes to grey skies, lake-effect snow, and a damp cold that penetrates thin fabrics.

The PATH underground walkway system means downtown workers can genuinely survive winter with inadequate outerwear, though this is inadvisable for anyone spending actual time outside.