Locals may need to be careful as the UK Health Security Agency has issued a yellow cold weather alert.

Hertfordshire is expected to continue to get colder over the next few days. In some areas a low of four-degrees is predicted today before temperatures could drop to zero or negative degrees on Sunday, Monday, and Tuesday.

Hertfordshire is expected to avoid the country's lowest temperatures. The Met Office expects a drop to minus four degrees in parts of rural south-west England on Saturday night and minus six degrees in rural areas along the Welsh border in Shropshire and north Herefordshire on Sunday night.

Sunday is forecast to remain largely dry, except for the occasional shower in southeast England early in the day, with the cold weather continuing for much of the next week.

The yellow cold weather alert for the vulnerable and elderly is in place across England from 9am today and lasts until noon on January 12, with temperatures likely to be a few degrees below average across much of the UK especially overnight, with ice an issue on wet ground.

Met Office chief forecaster Jason Kelly said: “As the prevailing weather conditions will be characterised by high pressure, a good deal of settled weather is likely.

“Clearer skies and a marked reduction in precipitation are expected, although any showers that do occur are likely to be wintry in nature.”