Will skies be clear over southern Ontario Tuesday night?
Partly clear skies are likely to appear over many, or most, regions during the evening except for lots of high-level clouds that may or may not be visible as cirrus clouds, and except for low-level humidity that will likely cause fog in many areas. Increasing mid-level cloudiness is expected to move eastward over southern Ontario later in the evening over southwestern regions and probably after midnight near western Lake Ontario.  

Will skies be clear over southern Ontario Saturday night?
Mostly cloudy skies are expected, except for occasional partly clear skies that may be visible over most regions, but lots of low-level cloudiness, and some jetstream-level clouds, will be over most of southern Ontario during most of the night.

Will skies be clear over southern Ontario Tuesday night?
Skies will most likely become clear over most regions at some time during the evening, except for lake-effect cloudiness over many regions south and east of the Great Lakes during the early evening, and except for some high-level cloudiness that may appear over most regions caused by jetstream-level moisture which is forecast to be over southern Ontario (illustrated below for early evening).

Will skies be clear over southern Ontario Monday night?
Mostly clear skies are expected over southwestern regions west of Lake Huron, and mostly cloudy skies are expected elsewhere, due to lake-effect cloudiness south and east of Lake Huron and Georgian Bay.

Will skies be clear Friday night over southern Ontario?
Skies may appear to be partly or mostly clear during the evening, before widespread cloudiness spreads over southern Ontario by early morning, but lots of high cloudiness will be over most regions (illustrated below for late evening).

Will skies be clear over southern Ontario Thursday night?
Some high cloudiness will most likely be visible over most regions, due to jetstream-level moisture over southern Ontario (illustrated below for early evening) but skies may appear mostly clear in some regions before the moon rises and illuminates the high clouds.

Will skies be clear over southern Ontario Wednesday night?
Clear skies are expected following some low-level clouds over some regions during the early evening, caused by low-level moisture (illustrated below for early evening) which is forecast to move eastward from southern Ontario during the evening.

Will skies be clear over southern Ontario Tuesday evening?
Mostly cloudy skies are expected, although some moonlight may appear during early evening and give the impression of partly clear skies.

Will skies be clear over southern Ontario Monday night?

Lots of jetstream-level moisture (illustrated below for early evening) is expected to cause mostly cloudy skies due to high clouds, although bright super moonlight may give the appearance of clear skies from locations where urban light makes the widespread high cloudiness hard to see.

Will skies be clear over southern Ontario Sunday night?
Clear skies are expected.

Note, no more blog updates will be posted until Nov. 14.

Will skies be clear over southern Ontario Saturday night?
Lots of high, thin cloudiness along the jetstream (illustrated below for late evening) will probably cause skies to be partly cloudy, although bright stars and moonlight may give the impression of clear, starry skies. Also some mid-level clouds may move over some regions, caused by a region of mid-level moisture which is forecast to move over southern Ontario (illustrated below for late evening).

Will skies be clear Friday night over southern Ontario?

Mostly clear skies are expected, except for some scattered low clouds that may appear, caused by low-level moisture flowing southward from Lake Huron and Georgian Bay (illustrated below for early evening) until early morning, when increasing low-level as well as jetstream-level moisture is likely to cause some cloudiness to develop. High, thin jetstream-level clouds may also appear from time to time since the jetstream is and will be over southern Ontario (illustrated below for late evening).

Will skies be clear over southern Ontario Thursday night?
Mostly cloudy skies are likely during the evening over most regions, followed by clearing skies after midnight, due to a region of uplift over southern Ontario during the evening and lots of low-level moisture flowing southeastward over southern Ontario (illustrated below for early evening) that will be available to form low-level clouds over many or most regions.