Will skies be clear Sunday night over southern Ontario?
It looks like skies will be clearing by sunset and be mostly clear overnight, primarily due to dry air aloft and subsidence ahead of an upper-level ridge that is building over the Great Lakes region during Sunday and is forecast to move over Ontario during Monday. Some cloudiness that develops during the afternoon could cause cloudy skies at sunset over some regions, but skies are likely to become clear over most regions by or shortly after sunset.