Will skies be clear over southern Ontario Tuesday night?
Partly or mostly clear skies are likely over some regions, while lots of cloudiness will move across most regions some of the time due to scattered amounts of moisture at low, mid and high levels.

Will skies be clear over southern Ontario Monday night?

Partly or mostly cloudy skies are likely over most regions, due to low-level moisture flowing southeastward from Lake Huron and Georgian Bay (illustrated below for late evening), while skies could be partly clear over some regions.

Will skies be clear over southern Ontario Sunday night?
Partly or mostly clear skies are likely, except for lots of cloud over regions south of Lake Huron and Georgian Bay, especially during the early evening, due to low level moisture flowing southward from the lakes (illustrated below for late evening).

Will skies be clear over southern Ontario Thursday night?

Lots of cloudiness is likely during the evening over most regions, due to lots of low-level moisture flowing across the unfrozen lakes (illustrated below for early evening), and then mostly clear skies are expected by early morning as the low-level moisture moves southward from Ontario.

Will skies be clear over southern Ontario Monday night?

Mostly cloudy skies are likely over most regions, due to lots of low-level moisture over some regions (illustrated below for late evening), but skies could become partly or mostly clear over some regions especially during the early evening before mist or fog develops later in the evening.

Will skies be clear over southern Ontario Wednesday night?

Mostly clear skies are expected during the evening, except for some cloudiness over regions south and east of Lake Huron and Georgian Bay caused by low-level moisture (illustrated below for early evening) and then increasing high and mid-level cloudiness is expected later in the night beginning over southwestern regions.

Will skies be clear over southern Ontario Monday night?

Mostly clear skies are expected over southwestern regions during the evening, until mid-level cloud begins to move eastward over these regions later in the night, while mostly cloudy skies are expected over regions near, north and northwest of Lake Ontario due to low-level moisture (illustrated below for early evening) causing low cloud during the early evening.