Forecast issued at 5:30 am CST on Monday 20 April 2015.
A high 1039 hPa south of Port Lincoln will move very slowly eastwards to be just south of Mount Gambier on Wednesday evening. A weak trough of low pressure will move across the State on Thursday ahead of a vigorous cold front moving across the south on Friday.
Forecast for the rest of Monday
Fine apart from a slight chance of light showers about southern coasts. Cold early with areas of frost in the South East districts and frost patches on the ranges. A cool day with moderate southeasterly winds.
Tuesday 21 April
Fine apart from a slight chance of morning showers about southern coasts. Cold early with frost patches over the agricultural area and the south of the Pastoral districts. Areas of morning frost about the South East districts. A cool to cold day with light to moderate south to southeasterly winds, turning east to northeasterly in the west.
Wednesday 22 April
Fine. Cold early with patchy frost over the ranges and areas to the east of the ranges. A cool to cold day grading to mild in the north with light to moderate south to southeasterly winds, turning east to northeasterly in the west.
Thursday 23 April
Fine. Cool in the south grading to mild in the north with light winds . Cumulative rainfall totals until midnight Thursday are expected to be less than 2 mm about the southern coasts.
Friday until Sunday
The chance of showers developing about the agricultural area, more likely about the southern agricultural area. Cool to cold with moderate to fresh south to southwesterly winds, strong about the southern coasts on Friday and Saturday. Showers and winds easing on Sunday.
The next routine forecast will be issued at 4:30 pm CST Monday.