Will skies be clear over southern Ontario Monday night?
Mostly cloudy skies are likely during early and mid-evening, followed by mostly clear skies after late evening. Early evening cloudiness is expected to be caused by a region of mid-level moisture moving southward over southern Ontario (illustrated below for the hour before sunset) which is forecast to move south of southern Ontario by late evening as well as some high clouds that may be visible, caused by a region of jetstream-level moisture over southern Ontario during the evening (illustrated below for late evening).