Forecast issued at 4:30 pm CDT on Saturday 10 December 2016.
A high 1025 hPa south of the State will move slowly eastwards to be over the Tasman Sea on Sunday night. A cold front will move over the far west coast late Monday and extend to the far northeast of the State late Tuesday. A new high will move south of the Bight on Thursday.
Forecast for the rest of Saturday
Fine. Light to moderate east to southeasterly winds and moderate afternoon coastal sea breezes.
Sunday 11 December
Possible early morning fog in the Lower South East and about the eastern slopes of the Mt Lofty Ranges, otherwise fine. Warm in the south, hot elsewhere. Light to moderate southeast to northeast winds and afternoon coastal sea breezes.
Monday 12 December
Slight to medium chance of showers and possible thunderstorms northeast of Moomba in the afternoon and evening. Slight to medium chance of showers also developing west of Nullarbor in the evening. Warm to hot in the south grading to very hot to very hot in the north and west. Moderate northerly winds, fresh in the west ahead of a milder southwesterly change moving over the far west in the evening.
Tuesday 13 December
Slight to medium chance of showers extending across the State. Possible thunderstorms east of Oodnadatta to Whyalla to Keith, mostly in the afternoon and evening. Warm about southern and western coasts and in the west, hot to very hot elsewhere. Freshening north to northwesterly winds ahead of a milder southwesterly change near Tarcoola to Port Lincoln around sunrise, extending east to reach Oodnadatta to Broken Hill in the late evening.
Wednesday 14 December
Slight to medium chance of showers northeast of about Renmark to Coober Pedy, more likely in the northeast. Slight chance of showers over the southern agricultural area and West Coast district. Possible thunderstorms east and north of Leigh Creek, mostly in the afternoon and evening. Mild to warm in the south and west, grading to hot in the northeast with moderate to fresh southwest to southerly winds. Cumulative rainfall totals until midnight Wednesday are expected to be up to 2 mm, increasing to 2 to 10 mm west of Fowlers Bay and east of Lameroo to Whyalla to Roxby Downs. Isolated falls of up to 15 mm are possible in the south of the North East Pastoral district.
Thursday until Saturday
A chance of showers about the southern and western coasts and the eastern border area of the North East Pastoral on Thursday and about southern coasts and the Lower South East on Saturday. Mild to warm in the south grading to hot in the north with mainly light to moderate south to southeasterly winds.
The next routine forecast will be issued at 5:30 am CDT Sunday.