The Met Office yellow warning was originally in place for Sunday with temperatures set to plummet this evening (Friday).
It has now been extended across the region to cover Saturday, which also includes a warning for ice.
Much of the country is expected to be affected by the cold temperatures.
Anglian Water rules out hosepipe ban for Bedford households
Delays ahead as THREE roads in Bedford and Kempston to be resurfaced
Fire destroys huge area of land at Great Denham Golf Course
'Sophisticated crime group' behind £1.1m stolen from Luton council that was destined for a Bedford school
Man still in critical condition after serious assault in Bedford a month ago
The Met Office is warning of scattered snow showers throughout Saturday which may become more prolonged, particularly during the evening.
It is expected the snow showers are likely to continue throughout Saturday with accumulations proving disruptive.
There could be disruption to travel and power cuts, according to the Met Office.