The Met Office has issued a yellow warning of fog for the north-west region, including Cheshire West and Chester.
Forecasters said freezing fog patches will become more widespread and locally dense during this evening, December 28, overnight and through Thursday morning, December 29.
Mersey ferry services will only run between Liverpool and Seacombe as the Met Office warns that Merseyside could be blanketed by freezing fog.
Merseytravel said ferries would not be calling at the Woodside terminal until further notice because of 'reduced visibility on the River Mersey.'
Driving conditions will be difficult with journeys likely to take longer than usual while some delays to air travel are possible.
A forecaster said: “While not all areas will have fog, where it does form the visibility could be less than 100 metres.
“Combined with temperatures below freezing, there is also the risk of ice forming on some untreated surfaces particularly later in the night and early on Thursday morning.
“The fog patches are expected to slowly thin during Thursday, although some patches may persist throughout the day.”