ABC Online | South Australia sizzles as heatwave continues; grain farmers warned about fire ... ABC Online South Australia is sizzling through the third day of a heatwave, with Adelaide recording 40.5 degrees Celsius at 12:47am after the hottest December night since 2009. Adelaide forecast: Sunday — Top of 41C with winds of up to 35kph; Monday — Tipped to ... South Australian firefighters remain on alert |