Road users are warned to watch out for Ice, fog and snow in parts of the South today and drive to the conditions.
The Queenstown Lakes District Council said overnight rain and clearing skies brought with it a risk of a sudden freeze and widespread ice.
Possible rain this morning could bring snow to the top of the Crown Range linking Queenstown and Wanaka and Lindis Pass (State Highway 8). Drivers should carry chains and watch for gritted areas.
The constant freeze-thaw and rain increases the danger of rockfall, the council said, and this had been reported on the Devils Staircase between Frankton and Kingston.
"Look out on that route in particular and expect the unexpected."
In Central Otago, there were mixed conditions this morning - light rain and fog in some areas. Temperatures ranged from a chilly 2degC to 4degC.
There were snow and ice warnings for State Highway 6 on Kawarau Gorge and Haast Pass to Makarora.
Rain was forecast for the Milford Road (State Highway 94) today, with between 3cm-5cm of snow likely around the Homer Tunnel area.
Showers and snow flurries were expected also on Monday.
