Met Office spokesman, Richard Miles, said today will stay mostly sunny and dry today with some cloud arriving later in the afternoon. Temperatures will peak at 17C.
He said: "Tomorrow,with any showers arriving during the day, we might get some thunder. It will feel quite cool but the thunder is a potential because of the meeting of two air masses - a warm and cold front."
He added that the weekend will be "grey" with the threat of some rain showers.
And he stressed it is too early to predict whether the tropical Storm Florence could threaten Scotland.
The storm is moving towards the east US coast but other media reports today suggest it could be taken east towards the UK by the North Atlantic Jet Stream.
Mr Miles added: "It's always a possibility that it could come here, but it's way too early to predict. We don't know which way it's going to flow."