The MetService reported Dunedin city was the warmest place to be on Sunday night with an overnight low of 7.1degC but that was in sharp contrast to Dunedin airport at -6.9degC which was the coldest in Otago and Southland.
Many people living in the South woke to heavy frosts yesterday, including those on the Taieri Plain, the Waitaki Valley, and Invercargill.
Queenstown plummeted to -3.2degC, Wanaka was slightly warmer at 1.4degC, Invercargill went down to -3degC, Oamaru was just above freezing at 0.6degC, but Omakau recorded -5.2degC and Lumsden had a low of -4degC.