Friday will start off mainly cloudy with the possibility of isolated showers or thunderstorms but will improve during the day.
There will also be light dust, which over the weekend is expected to increase.
Temperatures will rise to 23 C inland, around 22 C on the south and east coasts, around 20 C on the west and north coasts and 14 C in the mountains.
Tonight there will be intervals of increased medium and high cloud.
Temperatures will fall to 11 C inland, around 12 C on the coasts and 4 C in the mountains.
Over the weekend there will be intervals of increased medium and high cloud.
Temperatures will edge up to a little above the seasonal average.
On Monday, there will be increased local cloud that will lead to isolated showers or thunderstorms.
Temperatures will edge down to the the average for the time of year.