Will skies be clear over southern Ontario Monday night?

It looks like partly clear skies, with bright moonlight, will give the appearance of clear skies. Some mid-level humidity, especially during early evening, will probably cause some visible cloudiness and some jetstream-level moisture will probably also appear as cirrus clouds. The charts below show the moisture at the 700 hPa level moving eastward from southern Ontario during the evening as well as the position of the high-level jet.