Will skies be clear over southern Ontario Friday night?
Mostly cloudy skies are expected over most southern regions, due to high-level cloudiness spreading northward over southern Ontario ahead of the remnant of Hurricane Harvey, illustrated below. The high cloudiness may occasionally be thin enough to allow the moon and brighter stars to give the impression of clear skies over some regions. Some northern regions are likely to remain mostly clear, depending on how far northward the high cloud can spread before getting dispersed in the high pressure ridge over northern Ontario.