London and areas of south east England could see snow on Thursday, forecasters say.
Temperatures dropped below freezing for much of the country over the weekend. The coldest recorded temperature so far this autumn was -7.7C in Shap, Cumbria, on Saturday morning.
The cold air is coming from Scandinavia where people there are experiencing near-record cold November weather. Wintry showers are forming in the North Sea and will come onshore across eastern parts of the UK.
The cold weather is expected to to stick around into next week.
Maximum temperatures this week will be around 2C to 6C but it may not even get above freezing in parts of Scotland and northern England.
While snow may fall in London and south east England later this week, it is not likely to settle or cause disruption.