Sunny skies today will be encroached by increasing overhead clouds tomorrow as a low pressure system approaches from the south. High pressure will retain control of conditions for one more day, resulting in mostly clear skies and very light winds through the daylight hours on Sunday. Near record-breaking temperatures are likely as the air mass sitting over New England continues to moderate under plentiful sunshine. Overnight, winds will gradually pick up and shift towards the southeast, transporting increased moisture into the region in advance of a developing disturbance approaching from the south. The incoming system will push cloudiness into the skies during the day tomorrow, which will aid in keeping temperatures down some ten degrees from Sunday's highs. Fog will return to the summits by sunset, with isolated showers becoming possible as nightfall approaches.