Will skies be clear Monday evening over southern Ontario?

It looks like clearing skies during the evening over some regions of southern Ontario, except for some cloudiness south of Lake Huron and Georgian Bay, and some low and mid-level cloudiness over regions near Lake Ontario and Lake Erie caused by mid-level moisture associated with a cold front that moved southward from southern Ontario during Monday (and more generally, the frontal zone over the southern and eastern Great Lakes region) combined with some vertical uplift that will help to generate clouds.

The forecast charts below (if they attach correctly) show mid-level humidity and uplift near the Toronto area and westward during the early evening. Also, high-level jet stream winds will still be in the vicinity of Lakes Erie and Ontario. All of these sources of cloud will be gradually moving southward overnight, resulting in gradually clearing skies (except for the more persistent lake-effect cloudiness).