The good and the bad of latest SA rain event

Falls of up to 140 millimetres were recorded on the Eyre Peninsula, with many other regions receiving 60-100mm across four days spanning the weekend.

Croppers still reaping are facing lengthy harvest delays and grain quality downgrades, while more summer spraying will be required to get on top of weeds.

However, the stored moisture is being touted as invaluable for next season, while livestock producers are hoping the downpour will give upwards-trending markets another kick.

Daniel and Kelsey Griffiths operate a dedicated cropping enterprise 15 kilometres north west of Cowell and received 136mm over several days.

The Griffiths finished harvest about a month ago so the timing was in their favour.

"For us it's great because we've got moisture going into next season but one downfall is the spraying we'll need to do," Mr Griffiths said.

"We had 20-30mm a couple of weeks before this so the weeds were starting to come up anyway.

"We would have been spraying about the time this rain came so we'll just wait a bit longer again because we won't be able to get on paddocks for a while."

The downpour arrived at an inopportune time for Joel Schmidt who was in the midst of harvest on the lower Yorke Peninsula.

He said they still had 800 hectares of crop to reap across their land at Yorketown, Foul Bay, Edithburgh and Stansbury, but had copped 70-80mm which would see the headers out of action for some time in a harvest that has already been dogged by moisture issues.

"We had about 20-40mm two weeks ago and that didn't affect our grain quality too much, but this one certainly will," Mr Schmidt said.

"I'd say falling numbers are going to be shot and we're going to be downgraded to feed spec."

While a "full tank" for next year was welcomed, an increased summer spray program was not and will likely start while harvest is still going.

"I was going to do a heap of weed seeking, but that idea has been scrapped now and we'll just have to blanket spray the whole farm," Mr Schmidt said.

The net result of 91mm for beef producer Nick Simpson, Wild Dog Creek, Bugle Ranges, is expected to be largely positive.

Running 700 breeding Angus and Shorthorn cows across land from Bugle Ranges down to Myponga, Mr Simpson said dams and tanks had been topped up which would lead to less anxiety over summer.

He is also expecting some added confidence in the marketplace to keep cattle prices moving in a positive direction, while much of their paddock feed will get a boost.

"The rain we've had is more than just annoying summer weeds - this is significant," he said.

"Paddocks we cut early for silage have really shot away from rain we got in November and this is a great follow up to what we got in November."

He said the only downside of the deluge was the nutritional value of some standing dry feed would be washed out.

After 95mm of rain and thunderstorms, Dan McCaul said his Mount Jagged property had avoided damage and enjoyed some benefits.

"It's unseasonal but welcome and it will help grow some of the feed for our dairy cattle," he said.

"We've had a full germination of clovers and the grasses have shot up.

"We're in a little circle on the map, that's pretty close to 1000mm of annual rainfall and we're in a very privileged area for rainfall."

Along with his family, Mr McCaul runs the Alexandra Cheese business, using the milk from his 50 head of Jersey cows on his 100 hectare property.

Eyre Peninsula: Cowell 125mm, Cleve 108mm, Whyalla 92mm, Buckleboo 81mm, Wudinna 79mm, Streaky Bay 76mm, Minnipa 76mm, Tumby Bay 73mm.

North West and Far North: Lake Everard 88mm, Yudnapinna 80mm, Mount Ive 71mm, Woomera 55mm.

Upper and Mid North: Snowtown 98mm, Koolunga 70mm, Balaklava 67mm, Appila 53mm, Wirrabara 48mm.

Yorke Peninsula: Kadina 97mm, Stansbury 91mm, Wallaroo 89mm, Pine Point 89mm, Paskeville 83mm, Moonta 79mm.

Lower North and Adelaide Plains: Roseworthy 55mm, Stockport 48mm, Tarlee 45mm.

Adelaide Hills and Fleurieu Peninsula: Mount Bold 95mm, Inman Valley 94mm, Willunga 86mm, Victor Harbor 85mm.

Murraylands, Mallee and Riverland: Tailem Bend 47mm, Palmer 45mm, Lameroo 28mm, Claypans 22mm, Eudunda 19mm, Berri 4mm.

South East: Bordertown 53mm, Coonalpyn 44mm, Keith 41mm, Tintinara 35mm.