According to the National Center for Hydro-Meteorological Forecasting, the cold air mass has approached the border of our country.
On March 5, this cold air mass will weakly affect the mountainous areas of the Northeast; then around the night of March 5 and March 6, it will be strengthened, affecting other places in the Northeast and North Central regions, then affecting the Northwest and some places in the Central Central region. On land, the wind will gradually strengthen to level 3-4, coastal areas level 4-5, and some places will gust to level 6.
In the North from March 5, the temperature will gradually decrease. From the night of March 5, the North and North Central regions will turn cold, with some places in the North experiencing severe cold; from March 6, the mountainous areas in the Northeast will be very cold, with some places experiencing severe cold. From around the night of March 6, the area from Quang Binh to Hue will turn cold. The lowest temperature in this cold air mass in the North is generally from 12-15 degrees Celsius, in high mountainous areas below 8 degrees Celsius; in the North Central region, it is generally 14-17 degrees Celsius; from Quang Binh to Hue, it is generally 17-20 degrees Celsius.

Hanoi
Lowest temperature: 20-22 degrees Celsius Highest temperature: 24-26 degrees Celsius
Cloudy, scattered rain and light rain. Northeast wind level 2-3. Cold at night and morning.
Northwest
Lowest temperature: 19-22 degrees Celsius, some places below 18 degrees Celsius Highest temperature: 25-28 degrees Celsius; Northwest region 31-34 degrees Celsius, some places above 35 degrees Celsius
Cloudy, rain in some places at night, sunny during the day, especially in the Northwest region, there are places with hot weather; Light wind. Cold at night and morning.
Northeast
Lowest temperature: 19-22 degrees Celsius, mountainous areas below 18 degrees Celsius Highest temperature: 23-26 degrees Celsius
Cloudy, scattered rain and light rain. Northeast wind level 2-3. Cold at night and morning.
Thanh Hoa to Hue
Lowest temperature: 21-24 degrees Celsius Highest temperature: North 23-26 degrees Celsius, some places above 26 degrees Celsius; South 27-30 degrees Celsius, some places above 30 degrees Celsius
The North is cloudy, with rain in some places, early morning there is scattered fog and light fog, afternoon and evening there is less cloud and sunshine; the South is cloudy, with showers and thunderstorms at night in some places, sunny during the day. Light wind. During thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind.
Da Nang to Binh Thuan
Lowest temperature: 22-25 degrees Celsius Highest temperature: 29-32 degrees Celsius, some places above 32 degrees Celsius
Cloudy, showers and thunderstorms in some places in the evening and at night, sunny during the day. Light wind. During thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind.
Central Highlands
Lowest temperature: 19-22 degrees Celsius, some places below 19 degrees Celsius Highest temperature: 31-34 degrees Celsius, some places above 35 degrees Celsius
Cloudy, showers and thunderstorms in some places in the evening and at night, sunny during the day. Light wind. During thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind.
Southern region
Lowest temperature: 23-26 degrees Celsius Highest temperature: 31-34 degrees Celsius, some places above 35 degrees Celsius
Cloudy, no rain at night, sunny days, hot weather in some places. Light wind.