Strange Day in Ontario

Weird weather in Ontario.
It is only April, but a warm, humid air mass has brought summer-like temperatures to most areas of the province.
Atikokan and Sudbury saw the mercury rise to a daytime reading of 25 degrees on Tuesday.
Toronto was close to 30 degress, not including the humidex.
Meantime, Environment Canada issued a severe thunderstorm watch for parts of the Northwest including Dryden, Sioux Lookout, Fort Frances, even Atikokan.