Tonight: Mostly fair with brief isolated showers in some areas. Tomorrow: Partly cloudy during the morning to early-afternoon with light to moderate showers mainly over Tobago and central to northern Trinidad. There is a medium chance for an isolated heavy shower or thunderstorm in those areas, and a low chance for an isolated thunderstorm to develop over south-west Trinidad. Conditions become mostly fair from mid-afternoon but with a few brief showers favouring Tobago and eastern Trinidad during the evening and night.