Bureau of Meteorolgy says thunderstorms loom over Sydney weekend SYDNEY will remain sodden with the weeks wet conditions set to prevail across the city today and into the weekend. A Bureau of Meteorology spokesman said the wet conditions were caused by "a low-pressure trough over the central parts of the state with easterly winds feeding into it, generating showers." Since 9am yesterday, including overnight showers, Observatory Hill has had 6.2mm of rain, Sydney Airport 1.4mm and Bankstown 1.2mm. Inland suburbs remained comparatively dry with Richmond getting 0.2mm of rain and Penrith 0.4mm. Rain and possible thunderstorms are forecast through the weekend. "Today there will be a few showers with the temperature reaching about 18 degrees in the city and 17 in the west with no windy conditions expected," the spokesman said. Looking ahead to the weekend the Bureau said to expect rainy conditions with the chance of a thunderstorm. It looks like a wet weekend on the way so we expect scattered showers across Sydney and the chance of a thunderstorm on Saturday. The rain will be continuing on Sunday with conditions clearing on Monday.