Friday, 17 May 2019


Will skies be clear over southern Ontario Friday night?
Mostly clear skies are likely over most regions, except for mostly cloudy skies over southwestern regions due to mid-level moisture which is forecast to be over southwestern Ontario overnight (illustrated below for late evening) and except for some low clouds during the evening and some high clouds over most other regions until about midnight.




Wednesday, 15 May 2019


Will skies be clear over southern Ontario Wednesday night?
Mostly or partly cloudy skies are expected during the evening over most regions, due to lots of low and mid-level moisture remaining over and moving southward from southern Ontario during the evening following this afternoon’s cold front, and then mostly clear skies are likely after midnight. Fog and low cloud may develop over many regions after skies become clear and before morning in locations where winds diminish.



Tuesday, 14 May 2019


Mostly clear skies are likely, except for some cloudiness during the evening over regions near and north of lake Ontario, caused by some low and mid-level moisture which is gradually moving eastward from southern Ontario during Tuesday (illustrated below for late evening) and except for increasing cloudiness after midnight over most regions, caused by increasing mid-level moisture which is forecast to move southward over southern Ontario early Wednesday (illustrated below for early Wednesday).




Friday, 10 May 2019


Will skies be clear over southern Ontario Friday night?

Mostly clear skies are expected, except for some low clouds during the evening over regions near and north of Lake Ontario, caused by low-level moisture remaining after Friday’s cold frontal passage (illustrated below for early evening).




Tuesday, 7 May 2019

Will skies be clear over southern Ontario Tuesday night?

Lots of scattered high cloudiness is likely to be visible over many regions, caused by high and mid-level moisture which is forecast to be over most of southern Ontario overnight (illustrated below for late evening); otherwise, generally clear skies are expected.



Sunday, 5 May 2019


Will skies be clear over southern Ontario Sunday night?
Mostly clear skies are expected, except for some low clouds that may appear over some regions during the evening, caused by regions of low-level moisture which are forecast to be over southern Ontario during the evening (illustrated below for late evening).



Saturday, 4 May 2019


Mostly clear skies are likely, except for some low clouds during early evening, and except for fog which is likely to develop by late evening over many regions. Some high cloudiness is also likely to be over southern regions (near Lakes Erie and Ontario) but may not be visible due the high humidity and fog developing.