WatchSome weak systems will start to push in from the north over the next 24 hours setting up the possibility of showers. Expect increasing cloud tonight with a slight chance of a thunder shower and lows of 11 C. Wednesday will be a mainly cloudy one with a 40 per cent shower chance and highs slightly below normal at 19 C. More cloudy days are ahead for Thursday and Friday with the shower chance increasing to 60 per cent.