According to the National Center for Hydro-Meteorological Forecasting, today (March 18), the cold air mass will continue to move south, affecting the Northeast region, then spreading to the North Central, Northwest, Central Central and some places in the South Central.
The Northeast and Northwest regions will have cloudy skies with rain in some places. Cold, some places are very cold, severe cold, the lowest temperature in mountainous areas is below 10 degrees Celsius.
Hanoi area is cloudy, with rain in some places. Northeast wind level 3, cold weather. Lowest temperature 15-17 degrees Celsius, highest: 18-20 degrees Celsius.
The Southern region is cloudy, with showers and thunderstorms in some places in the evening and at night; sunny during the day, some places are hot. Light wind. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Other areas will have sunny days; showers and thunderstorms in some places in the late afternoon and night. People and tourists need to be on guard during thunderstorms with the possibility of tornadoes, lightning, hail and strong gusts of wind.

Hanoi
Lowest temperature: 15-17 degrees Celsius Highest temperature: 18-20 degrees Celsius
Cloudy, with rain in some places. Northeast wind level 3. Cold weather.
Northwest
Lowest temperature: 14-17 degrees Celsius, some places below 13 degrees Celsius Highest temperature: 17-20 degrees Celsius
Cloudy, with showers and thunderstorms in some places. Light wind. Cold, some places are very cold, very cold.
Northeast
Lowest temperature: 14-17 degrees Celsius, high mountainous areas below 10 degrees Celsius Highest temperature: 17-20 degrees Celsius
Cloudy, with rain in some places. Northeast wind level 3. Cold weather, mountainous areas are very cold, some places are very cold.
Thanh Hoa to Hue
Lowest temperature: 16-19 degrees Celsius Highest temperature: 18-21 degrees Celsius
Cloudy, with rain, showers and thunderstorms in some places. North to northwest wind level 3-4. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Da Nang to Binh Thuan
Lowest temperature: 22-25 degrees Celsius Highest temperature: North 24-27 degrees Celsius, South 28-31 degrees Celsius
The North is cloudy, with rain, showers and thunderstorms, some places have moderate rain, heavy rain; the South is cloudy, with showers at night, and sunny during the day. Northeast wind level 3-4, coastal areas have gusts of level 6. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Central Highlands
Lowest temperature: 18-21 degrees Celsius Highest temperature: 28-31 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, hail and strong gusts of wind.
Southern region
Lowest temperature: 24-27 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, some places are hot. Light wind. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.