Snow is clearing around Lithgow and the Great Western Highway has reopened to Bathurst.
There are still reports of icy conditions at Yetholme and motorists are urged to take care when travelling through the area.
Blue Mountains Police Command reports bumper to bumper traffic through the Mountains on Sunday afternoon. They have advised people to be patient.
According to Live Traffic NSW, roads towards Oberon and Jenolan Caves are now open. Motorists are being warned of icy conditions still present.
Traffic is being affected in both directions on the Great Western Highway at Mt Victoria due to ice and snow. There is a warning of alpine conditions and drivers are urged to exercise caution.
As of 12.48pm, The Great Western Highway between Raglan and Marrangaroo remained closed after it was shut late on Saturday night due to icy conditions.
"Roads closures implemented at nearest centre to enable access to food, water and shelter," the Traffic and Highway Patrol Command stated.
Heavy snow is being reported on Chifley Road from Bell to Lithgow. Blue Mountains Police Area Command reports that heavier snow has been there is snow from Wentworth Falls to Mt Victoria.
"Please drive to the conditions," the Command urged in a Facebook page.
"Be prepared for hazards such as black ice (no reports of any as yet) and check Live Traffic for updates."
Lithgow is set for a top of 4 degrees on Sunday, August 11, with a chance of a thunderstorm in the evening.
It hit an overnight low of zero after reaching a top of just four degrees on Saturday. A sheep graziers' warning was issued by the Bureau of Meteorology about the dangers of the weekend's conditions to stock.
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