Drivers across Norfolk should have their ice scrapers ready for the first frost of the season.
Temperatures are expected to dip as low as -2C on Friday night as the dense fog shifts and blue skies appear.
The chilly temperatures follow several days of fog and weather warnings across Norfolk, where visibility fell to less than 100m.
During the yellow weather warning, which was in place on Monday and Tuesday, drivers were urged to allow extra time for travel.
A spokesman for the Met Office said: "This will likely lead to some delays to transport and difficult travelling conditions."
Sunshine and blue skies are expected to make an appearance with the colder spell across the weekend.
On Friday in Norwich, it will be largely dry and remain sunny through the weekend, with temperatures set to reach a high of 5C at 1pm.
Along the coast, there will also be sunny spells and warmer temperatures of 8C at midday.
Temperatures are forecast to rise to around 7C by Sunday in Norwich and should remain at similar temperatures throughout the following week.
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