The cold weather is set to continue, with the Bureau of Meteorology issuing a frost warning for part of Victoria for tomorrow morning.

With another clear still night on the way, the warning covers the Mallee, Wimmera, Northern Country, North Central, North East and Central forecast districts.

The prediction is that overnight temperatures may fall below zero degrees in these areas leading to the risk of frosts and fog patches.

Already this week, the temperature measured at Horsham has dipped below zero twice, -0.6°C on Sunday and -0.5°C this morning, and tomorrow it should fall to around -1°C between around 3 am and 7 am.