According to the latest weather forecast from the National Center for Hydro-Meteorological Forecasting, in the North, a part of cold air is moving south. It is expected that this part will strengthen in the coming days, clearly affecting the weather in the Northern and North Central regions.
Around the morning of October 19, cold air began to affect the Northeast region.
From October 20-22, the cold air will strengthen, expanding to affect other places in the Northeast, North Central, and some areas of the Northwest - Central Central.
Due to the influence of cold air, the Northeast region will have scattered showers and thunderstorms in some places.
From the evening and night of October 19, the weather in the North will turn cool; from the night of October 20, the night and morning will be cold, the mountainous areas will be cold.
The lowest temperature during this period in the Northern Delta: about 19-21°C, the Central region is about 17-19°C and the highlands are below 16°C.
The North and Thanh Hoa will have scattered showers and thunderstorms at night and sunny days; the Northeast region will have scattered showers and thunderstorms on the night of October 18 and October 19.
The area from Ha Tinh to Quang Ngai will have moderate rain, heavy rain and thunderstorms, some places will have very heavy rain.
Other areas will have scattered showers and thunderstorms in the evening and at night, with some places having heavy rain.
People and tourists should be on guard during thunderstorms with the possibility of tornadoes, lightning, hail and strong gusts of wind.

Weather forecast for tonight and tomorrow, October 18:
Hanoi
Lowest temperature: 23-25 degrees Celsius Highest temperature: 31-33 degrees Celsius, some places above 33 degrees Celsius Cloudy, showers and thunderstorms in the evening and at night; sunny during the day.
Light wind.
Northwest
Lowest temperature: 21-24 degrees Celsius, some places below 21 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.
Northeast
Lowest temperature: 22-25 degrees Celsius, mountainous areas below 22 degrees Celsius Highest temperature: 30-33 degrees Celsius, some places above 33 degrees Celsius Cloudy, showers and thunderstorms in some places in the evening and at night; sunny during the day.
Light wind.
Thanh Hoa to Hue
Lowest temperature: 22-25 degrees Celsius Highest temperature: 28-31 degrees Celsius Cloudy, scattered showers and thunderstorms in the North; moderate rain, heavy rain and thunderstorms in the South, locally very heavy rain.
Light wind.During thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind.
South Central Coast
Lowest temperature: 23-26 degrees Celsius Highest temperature: 29-32 degrees Celsius Cloudy, the North has moderate rain, heavy rain and thunderstorms, locally very heavy rain; the South has clouds, scattered showers and thunderstorms; in the late afternoon and evening, there are scattered showers and thunderstorms, locally heavy rain.
Light wind.During thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind.
Central Highlands
Lowest temperature: 19-22 degrees Celsius Highest temperature: 27-30 degrees Celsius Cloudy, scattered showers and thunderstorms; scattered showers and thunderstorms tonight and tomorrow evening, locally heavy rain.
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 Cloudy, scattered showers and thunderstorms; scattered showers and thunderstorms tonight and tomorrow evening, locally heavy rain.
Light wind.During thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind.
Ho Chi Minh City
Lowest temperature: 24-26 degrees Celsius Highest temperature: 31-33 degrees Celsius Cloudy, scattered showers and thunderstorms in some places; In the late afternoon and evening, there will be scattered showers and thunderstorms, locally heavy rain in some places.
Light wind.During thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind.
