After a warm Saturday and Sunday that brought well above average temperatures, a cool change moved through late on Sunday that has dropped the mercury significantly.

Bathurst pushed past 20 degrees on Sunday, which is well up on the long-term average of 13 degrees for the month, and Oberon hit 16 degrees on Sunday, which is up on the long-term average for the month of 10 degrees.

Bathurst is only set to hit 10 degrees on Monday, however, and Oberon nine degrees.

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The Bureau of Meteorology says snow is possible on Monday in Orange, Blayney, Oberon and between Bathurst and Lithgow.