Will skies be clear over southern Ontario Sunday night?
Mostly clear skies are expected except for some high clouds that will likely be visible over most regions occasionally during the night, due to high-level moisture over southern Ontario overnight.

Will skies be clear over southern Ontario Saturday night?

Mostly cloudy skies are expected except for partly clear skies over the GTHA and western Lake Ontario areas during early evening, but high cloudiness is likely to be over those regions by sunset, caused by high-level moisture (illustrated below for early evening). Then, thicker, mid–level cloudiness is expected later during the evening, caused by mid-level moisture which is forecast to be over most regions by late evening (illustrated below for late evening).

Will skies be clear over southern Ontario Friday night?

Skies are likely to be cloudy during most of the night except for southwestern regions, where clearing skies are likely during the evening with only some low clouds that may remain, as low-level moisture moves southeastward from southwestern Ontario (illustrated below for late evening).

Will skies be clear over southern Ontario Wednesday night?

Mostly clear skies are expected over most regions, except for some low clouds that may persist until shortly after sunset, and except for some high clouds that may be visible over some regions, caused by some regions of high-level moisture which is forecast to move over southern Ontario overnight (illustrated below (or above) for late evening). Southwestern regions are likely to be mostly cloudy.

Will skies be clear over southern Ontario Monday night?

Partly clear skies are expected with lots of mid-level cloudiness, especially over southwestern regions during the evening, caused by mid-level moisture which is forecast to be over southern Ontario overnight (illustrated below for late evening).

Will skies be clear over southern Ontario Sunday night?
Mostly clear skies are likely, except for some clouds caused by some low-level and mid-level moisture which is forecast to be over southern Ontario (illustrated below for late evening).

Will skies be clear over southern Ontario Tuesday night?

Skies are likely to become clear during the evening over most regions, except for southwestern regions, as mid-level moisture moves southeastward from southern Ontario overnight (illustrated below for late evening).