As temperatures continue to drop, a yellow weather alert has been put in place for London.

It was put in place on November 28 and will last until midday on Tuesday (December 5).

According to UKHSA, a yellow weather alert means that there are health risks to vulnerable people use care services, for example those over the age of 65, those with pre-existing health conditions and those sleeping rough among others.

According to the Met Office, the temperature today will drop as low as one degree at around 9pm this evening, and will be no higher than three degrees at around 3pm.

It will be dry for most of the day, with the exception of a 50 per cent chance of rain at 12pm.

The cold weather is set to last for some time as London is set to get a lot colder in the coming weeks as early weather forecaster predictions suggest snow could be on the way.

The Met Office is already warning that parts of the UK could see 3cm of snowfall in spots as temperatures are expected to drop down to -7C.

Dr Agostinho Sousa, Head of Extreme Events and Health Protection at UKHSA, said: “With a risk of widespread overnight frosts and some snow across the country this week, it’s important to check in on the wellbeing of those most vulnerable to the cold.

“Cold weather can have a serious impact on health, particularly older people, and those with pre-existing health conditions, as it increases the risks of heart attacks, strokes, and chest infections.

“If you have a pre-existing medical condition or are over the age of 65, it is important to try and heat the rooms where you spend most of your time in, such as your living room or bedroom.”

We have compiled an hour-by-hour forecast from the Met Office so that you can plan ahead in the cold:

10am – one degree, 10 per cent chance of rain

11am – two degrees, 10 per cent chance of rain

12pm – one degree, 50 per cent chance of rain

1pm – two degrees, 10 per cent chance of rain

2pm – two degrees, 10 per cent chance of rain

3pm – three degrees

4pm – three degrees

5pm – two degrees

6pm – two degrees

7pm – two degrees

8pm – two degrees

9pm – one degree

10pm –one degree

11pm – one degree