Rain, hail, thunder and lightening has flashed across most of the state with some areas receiving enough rainfall to hit their usual yearly average.
While the rain was welcomed by graziers, it has delayed cropping practices in the Mid North where Luke Clark on their Belalie East property received 37 millimetres.
"We only started on cereals yesterday morning and got two hours in before the rain hit," he said.
"The main concern will be test weight in barley and whether the wheat gets downgraded.
"But there has been 30mm out towards Hallett and at Bundaleer there has been 37mm since Thursday."
Coonatto Station owners John and Erica Lock, Hammond, received 53mm of rain, which also dumped hail at their homestead.
"All my main floodways are gone," Mr Lock said.
"I have my floodway fencing on a hook and spring so when it floods it's meant to shoot up in the air and normally the floodways are safe and have worked well in the last four or five floods.
"But this time it came that quick and that hard, it's made a mess and was likely still hitting the bottom wires of the floodway."
The Lock family also lost access to the road with the flash flood stripping their driveway into the creek.
What is usually an oval shaped water spring, which they pump out, has had a landslide of gravel knocking the shape into a creek like flow and will now need to be fixed with a dozer.
Mr Lock said he had never seen rain falling as hard as it has in the past 24 hours but it was a shame it missed the dam that watered their stock.
"The rain droplets were hitting the waves of water and bouncing," Mr Lock said.
"In this country rain is welcomed any time - we're not wheat growers so I don't have to worry about grain shooting in the head - weeds are our friends.
"It's nice to have rain but steady rain so it doesn't do damage."
He said all his dry feed of barley grass and similar was washed away but he was expecting they would get spear grass or wire weed growing by the house where the rain fell.
Further east at Quinyambie Station, Kim Hucks said they also received more than 50mm in the past week with 28mm on Wednesday, 23mm on Thursday and a further 3mm yesterday.
Ms Hucks said it topped their annual rainfall for the year up to 164mm - far down on last years 300mm.
"It was great that we got that much but we were able to get someone to do a fly around (on Sunday) and it's come through in a pretty narrow strip," she said.
"The homestead where we measured everything got the brunt of it and unfortunately the strip's not very wide.
"As far as filling dams and things like that, it didn't help us at all, unfortunately.
"Those areas that did get rain will hopefully have it help with summer growth a little bit."
In the South East, Naracoorte is underwater with cattle producer David O'Shaughnessy coping 162mm from Thursday to yesterday morning.
"The average is about 20 inches (508mm) but we were getting pretty dry so this will now give us feed hopefully through until after Christmas," he said.
"I trade a lot of steers and I was going to sell a fair few and reduce my numbers, but I won't have to do that now."
At Glencoe, cattle producer Ash Cooper had 50mm and at his Wepar property he had 60mm.
"The usual average rainfall at Glencoe is around 800mm and we are up to 812mm now," he said.
"The rain now is absolutely perfect, especially for our new permanent pastures, because we've had a wet year early, then we had 200mm for June and it was just like someone turned off the tap and it's dried out really quick.
"It changes the whole outlook now - we probably had more feed here than most and it is still pretty green but it was getting to the point where that would have gone off pretty quickly if we didn't get it."
A Bureau of Meteorology spokesperson said an upper trough and an associated surface trough interacted to produce thunderstorms and heavy showers across central and eastern parts of the state.
"These systems are moving slowly eastwards during today, bringing showers, tending to rain at times, and thunderstorms over central and eastern parts of the state," they said.
"There is the potential for local heavy rainfall and severe thunderstorms, particularly over central and eastern parts of the agricultural area and the far south of the North East Pastoral, leading to localised flash flooding.
"Possible showers and storms will develop in the far north-west on Wednesday, extending across the north late in the week before clearing on Friday.
"Possible light showers in the south to southeasterly on shore flow about the south and western coasts for the remainder of the week."
They said conditions would ease this weekend but today has been the wettest day in Adelaide since June 23 where 41.6mm was recorded.
Today was also the wettest November day since the November 8, 2005 when 48.8mm fell.
The spokesperson said rain and thunderstorms were concentrated around central and eastern districts.
"The southeastern districts remained mostly dry up to 9am," they said.
"Northwestern and far western parts of the state also remained dry.
"Hail was observed on Monday afternoon at Melrose and broadly across the Adelaide metropolitan area this morning.
"Temperatures will be below average across the state for the remainder of the week.
They said temperatures would increase to above average in the west on Sunday and through other areas in the state by Monday.