On Saturday, Canberra, Australia, had a top of 9 degrees C, the earliest start to the season in 31 years.
Forecaster Sean Carson says the last time it was this cold so early in Autumn was in 1983.
Around the region, Braidwood dropped to zero while Goulburn recorded minus 2, as did the Snowy Mountains.
Temperatures dropped minus 1.7 degrees at Canberra Airport and minus 2.6 degrees at Tuggeranong.
Mr Carson says more freezing temperatures are expected this week.
“The cold front that swept across on the weekend did bring a dusting of snow across the Snowy Mountains,” he said.
Thanks to Jonathan Wilson for this link