Make sure to leave extra time to travel and wrap up warm today as many of Norfolk's pavements and roads are carpeted with ice.
A yellow weather warning for ice has been issued by The Met Office for most of the county, which began at 3pm on Wednesday and is in place until midday today.
The only places excluded are southern parts of Norfolk, including Attleborough, Diss and Thetford.
Temperatures plummeted across the county overnight with Marham hitting -9.2C and Norwich Airport recording a low of -6C.
Some schools in Norfolk have also announced they are closed today due to broken heating systems.
The yellow weather warning means that some injuries from slips and falls on icy services are likely and there will be icy patches on some untreated roads, pavements and cycle paths.
Norfolk & Suffolk Roads and Armed Policing Team has urged motorists to "drive to the conditions, increase the gap and slow down" amid black ice on the roads.
At present, there are no warnings in place for Friday or the weekend in Norfolk.
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