Will skies be clear over southern Ontario Thursday night?
Skies will be mostly clear during the evening over eastern regions, near the GTHA, except for high jetstream-level cirrus that may be visible by sunset. Further west, in southwestern regions, the cirrus will most likely be covering the sky by sunset. The jetstream-level moisture (illustrated below) is forecast to increase during the evening, but mid-level moisture is forecast to move eastward during the evening and to cause mid-level cloudiness over southwestern regions early in the evening and over eastern regions of southern Ontario by late evening.