Prepare for another cold start tomorrow morning, with the Bureau of Meteorology issuing a frost warning covering both the Wimmera and the Mallee.

The warning is current for the Mallee, Wimmera, Northern Country, North Central, North East, Central, West and South Gippsland and East Gippsland forecast districts, anticipating frosts with temperatures down to -2 degrees on Tuesday morning.

The Bureau also notes that temperatures at ground level can be many degrees lower than those recorded by standard weather stations, especially in calm conditions with clear skies.

A similar warning was issued for this morning which saw minimum temperatures across the region fall to -0.1 C in Horsham just after 7 am, -1.8 C at Hopetoun, and -0.5 at Nhill.