mau Son peak, 1,500 m high, records 0 degrees Celsius, while Hanoi registers over 10 degrees Celsius, with colder temperatures expected as a cold air mass continues to descend.

All northern provinces and cities, along with Thanh Hoa and Nghe An, are experiencing temperatures below 10 degrees celsius, with sunny days and a day-night temperature difference exceeding 10 degrees celsius.

Strong cold air masses are expected to sweep across the Northern region from tonight, bringing widespread severe cold. High mountainous areas may see temperatures drop below 5 degrees C, raising the risk of frost and hoarfrost.

A strong cold spell has brought temperatures in the northern region down to a low of 4 degrees Celsius, with Hanoi recording 12 degrees; there is a risk of frost in high mountainous areas today.