Forecast issued at 4:30 pm CST on Friday 3 July 2015.
A high pressure system centred over the eastern states is moving slowly eastwards and weakening. A weak front will pass to the south of the State overnight, followed by another front moving over the south on Monday, with an associated low pressure system to the south. A weak high pressure ridge will move over the State on Tuesday.
Forecast for the rest of Friday
Slight chance of showers southwest of a line Port Lincoln to Mount Gambier. Becoming cool to cold this evening with light southeast to northeasterly winds.
Saturday 4 July
Cold at first with frost over and to the east of the Mount Lofty and Flinders Ranges. Early fog patches over Eyre Peninsula and the Northwest Pastoral south of about Woomera. Slight chance of showers south of about Port Lincoln to Bordertown, increasing to a high chance south of about Mount Gambier. A cool day grading to mild in the far west with mostly light winds.
Sunday 5 July
Cold at first with frost over and to the east of the Mount Lofty and Flinders Ranges. Slight chance of showers developing south of about Elliston to Naracoorte during the afternoon or evening. A cool day grading to mild in the west with light to moderate northwesterly winds in the south, tending light and variable in the north.
Monday 6 July
Early frost patches over the North East Pastoral. The slight chance of showers over the agricultural area and West Coast district, grading to medium chance over the southern agricultural area, with a high to very high chance over southern coasts and the southern Mount Lofty Ranges. The chance of a thunderstorm about the Lower South East coast in the morning. Showers easing late afternoon. Cool grading to mild in the far north. Light winds in the north, with light to moderate northwesterly to southwesterly winds over the remainder, increasing to moderate to fresh in the south.
Tuesday 7 July
Early frost patches over the North East Pastoral. The slight chance of showers over the agricultural area, grading to medium chance over the southern agricultural area. Cool grading to mild in the far north. Mainly light winds. Cumulative rainfall totals until midnight Tuesday are expected to be generally less than 1 mm over the northern agricultural area, increasing to 1 to 5 mm about the southern agricultural area. Falls of 5 to 15 mm are possible about southern coasts, the southern Mount Lofty Ranges and the Lower South East.
Wednesday until Friday
Fine on Wednesday. The slight chance of showers extending from the west on Thursday, to be over most districts on Friday, with showers becoming more likely near southern and western coasts.
The next routine forecast will be issued at 5:30 am CST Saturday.