Will skies be clear over southern Ontario Wednesday night?

Partly clearing skies are likely over many regions later in the evening as mid-level moisture moves south and east of the province (illustrated below for mid-evening), but a strong jetstream will be over southern Ontario and jetstream-level moisture will be causing high cloud to cover the sky. Bright moonlight will likely become visible over most regions overnight, and may give the impression of clear skies in locations where the high cloud is not obvious and visible.

Will skies be clear over southern Ontario Tuesday night?
Mostly clear skies are likely during early evening, except for increasing high cloud in southwestern regions, due to mid-level moisture moving eastward over southern Ontario (illustrated below for mid-evening) and then cloudy skies are expected by early morning and by the start of the lunar eclipse, due to mid-level moisture which is forecast to be widespread over southern Ontario by morning (illustrated below for Wednesday morning).

Will skies be clear over southern Ontario Monday night?
Cloudy skies are expected, except for clearing skies during early morning over southwestern regions, as cloudiness and moisture (illustrated below for early Tuesday) move eastward from southwestern Ontario.

Will skies be clear over southern Ontario during Wednesday morning's lunar eclipse?

It looks like a high probability of overcast skies by Wednesday morning, and very likely that skies will be covered with high clouds by about midnight Tuesday night, due to increasing cloudiness ahead of Wednesday evening's low pressure trough. The illustration below shows mid-level moisture forecast to be over southern Ontario Wednesday morning, and the general forecast pattern seems very likely to result in the moistuire pattern as shown in the model output chart below.

Will skies be clear over southern Ontario Sunday night?
Mostly clear skies are expected during early evening, and then increeasing cloudiness is expected due to mid-level moisture which is forecast to move eastward over southern Ontario overnight (illustrated below for mid-evening).

Will skies be clear over southern Ontario Saturday night?
Clear skies are expected over most regions, except for some low clouds during early evening over regions north of Lakes Erie and Ontario until moisture (illustrated below for mid-evening) and low clouds following this evening's cold front move eastward several hours after sunset. Then, clear skies are expected until some more moisture and scattered clouds move over southern Ontario before morning.

Will skies be clear over southern Ontario Friday night?
Mostly cloudy skies are expected, except for a period during early Friday evening when skies may appear mostly clear, due to a narrow region of dry air in the jetstream-level moisture (illustrated below for early evening) that may result in skies appearing mostly clear for an hour or more over some regions before increasing mid-level moisture and cloudiness later in the evening.

Will skies be clear over southern Ontario Thursday night?
Lots of cloudiness is likely over most regions, especially during the evening, due to widespread low-level moisture (illustrated below for mid-evening), but some clear breaks between the clouds will likely allow moonlight and stars to be visible occasionally and give the impression of clear mostly skies from time to time.

Will skies be clear over southern Ontario Wednesday night?

Skies will appear to be mostly cloudy due to widespread high-level moisture (illustrated below for mid-evening) although the brighter stars may be visible and give the appearance of a clear sky.

Will skies be clear over southern Ontario Saturday night?
Skies are likely to be mostly cloudy, due to lots of high-level moisture and cloudiness, but thinner cloudiness may occasionally cause skies to appear to be partly or mostly clear over some regions.

Will skies be clear over southern Ontario Friday night?
Mostly cloudy skies are likely, mainly due to widespread high and mid-level moisture (illustrated below for mid-evening), although clouds may occasionally be thin enough to allow the brighter stars to be visible and give the appearance of mostly clear sky.

Will skies be clear over southern Ontario Wednesday night?
Mostly cloudy skies are expected due to lots of mid-level and low-level moisture over most of southern Ontario (illustrated below for early evening) but skies are likely to occasionally become mostly clear over some regions.

Note: no updates until January 17.
Clear skies!

Will skies be clear over southern Ontario Friday night?
Clear skies are expected over most regions, except for some low clouds over regions south and east of Lake Huron and Georgian Bay, due to low-level moisture flowing across the lakes (illustrated below for early evening).

Will skies be clear over southern Ontario Thursday night?

Mostly clear skies are expected, except for some cloudiness over regions south and east of Lake Huron and Georgian Bay, caused by low-level moisture flowing over these regions from the lakes (illustrated below for early evening).

Will skies be clear over southern Ontario Wednesday night?
Cloudy skies are expected during the evening until a cold front moves across southern Ontario, and then clearing skies are likely beginning before midnight in southwestern Ontario and later over regions further east, such as the GTA. Some mid-level clouds are likely to be visible after the cold front passage, due to mid-level moisture gradually moving eastward overnight (illustrated below for early Thursday) and lots of lake-effect low cloudiness is likely over regions south and east of Lake Huron following the frontal passage.