Low pressure is affecting the area.
Saturday will be partly cloudy and local showers and isolated thunderstorms are forecast, initially mainly in the west and gradually elsewhere. Thunderstorms are expected to be accompanied by hail.
Temperatures will rise to 33 C inland, around 30 C in the south and east, around 28 in the west and north and 23 C in the mountains.
Tonight will be partly cloudy and scattered showers are possible. Isolated thunderstorms may occur, mainly on the coast.
Temperatures will fall to 18 C inland, around 19 C on the coasts and 13 C in the mountains.
Sunday will be partly cloudy and scattered showers and isolated thunderstorms are forecast. The weather is expected to improve from late in the afternoon.
Monday will be mainly fine, although from midday on clouds that develop may lead to isolated showers and/or thunderstorms, mainly in the mountains and inland.
Tuesday will be mainly fine, but there will be increased cloud at intervals from midday on, mainly in the mountains and inland.
Temperatures will edge up on Sunday and Monday, remaining at the same levels on Tuesday which is a little above average for the time of year.