Will skies be clear over southern Ontario Sunday night?
Mostly cloudy skies are expected to continue over most regions of southern Ontario except for regions approximately near and northwest of the GTA, where skies are partly clear during the afternoon and will most likely remain mostly or partly clear during the evening. Increasing patches of high jetstream-level cloud are likely to appear over these regions until thicker lower-level cloud moves overhead later in the night ahead of Monday's storm system.