Will skies be clear over southern Ontario Thursday night?
Mostly clear skies are likely during the evening over most regions, except for southwestern Ontario where high clouds are likely to be visible, caused by jetstream-level moisture (illustrated below for mid-evening) and except for some low-level clouds that may appear over all regions, caused by moisture from Lake Huron.After midnight, increasing mid-level cloudiness is expected over southwestern regions due to increasing mid-level moisture (illustrated below for early Friday) and high clouds are likely to be over most of southern Ontario by morning.