A sprinkling of snow is even expected in high-lying areas.
The South African Western Service says that Gauteng residents will feel the cold weather from Sunday.
Forecaster Wayne Venter explains: “Gauteng will definitely feel a drop in temperature. On Sunday, we will see the wind coming through and will still have mild conditions in Gauteng.”
The weather service says that rain and showers are possible over the south-western parts of the Western Cape from Saturday afternoon, which is expected to spread to the remainder of the Western Cape and the western and southern parts of the Northern Cape on Sunday.