The Met Office is warning of icy conditions across parts of the Anglia region this morning. The warning is in force until 10am.
Drivers are being advised to take extra care on the roads following a yellow warning of ice.
Icy patches are likely to form on roads as temperatures dipped below freezing last night. Patches of freezing fog are also expected.
"After a very cold night and as moister air comes in contact with cold surfaces later, the potential for a lot of frost to form, rendering some surfaces hazardous.
"Please be aware that untreated surfaces, such as pavements and some minor roads, are likely to turn very slippery on Tuesday morning."
A further Met Office yellow warning has been issued for thick fog across the Anglia region as weather conditions cause delays and cancellations at airports.
Stansted airport in Essex says that heavy fog is affecting flights to and from the airport leading to delays and cancellations. It is advising passengers to check with airlines and allow extra time for journeys to the airport.
Flights into and out of Luton airport are also affected by fog.
The airport says there have been a number of delays to arrivals and departures. Passengers are advised to check in as normal.
The Met Office weather warning is in force until 10am on Saturday 31 December.
"Areas of fog have persisted in places through Friday and are expected to become more widespread and freezing in places again on Friday night and into Saturday morning.
"Driving conditions will be difficult with journeys likely to take longer than usual and delays to air travel possible.
"Fog and freezing fog patches with visibility less than 100 metres in places are expected to become more widespread."
The Met Office has issued a yellow weather warning for fog valid until 10am on Friday 30 December 2016
The Met Office says areas of fog and freezing fog have developed, including some dense patches of fog in places.
Driving conditions will be difficult with journeys likely to take longer than usual and delays to air travel are possible.
"Fog and freezing fog patches are locally dense with visibility less than 100 metres in places.
"Combined with sub-zero temperatures, there is also a risk of icy patches on some untreated surfaces.
"This fog will only slowly lift and thin today, likely lingering into the late morning or afternoon in some places, most likely over parts of East Anglia and southeast England."
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The Met Office has issued a fog warning for the East of England on Wednesday.
Forecasters say patches will develop overnight tonight and will become more widespread in the morning.
Driving conditions are set to be difficult and there could be some delays to air travel.
"Patches of fog are expected to form overnight and whilst not all areas will see them where fog patches do form visibility could be less than 100 metres. The fog patches are expected to slowly thin during Wednesday, although some patches may persist throughout the day."
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It appears even the weather is feeling festive.
Cheryl Holland was stunned when she snapped this cloud formation - shaped like the face of Father Christmas.
The unusual formation was photographed in Witham in Essex in July.