According to the latest weather forecast from the National Center for Hydro-Meteorological Forecasting, cold air has affected the Northeast region, some places in the Northwest and North Central regions.
The Northern region and Thanh Hoa have had rain. At Bach Long Vi station, there are strong Northeast winds of level 5, sometimes level 6.
On the night of October 31 and November 1, cold air was continuously strengthened, expanding to affect other places in the North Central region and the Northwest region, then affecting the Central Central region.
On land, the Northeast wind will be strong at level 2-3, and coastal areas will be strong at level 3.
Due to the influence of cold air combined with disturbances in the East wind zone, there will be rain in many places in the Northern region, Thanh Hoa and Northern Nghe An.
In the North and North Central regions, it is cold, in some mountainous areas of the North, it is cold.
Weather forecast for the night of October 31 and November 1, the North and North Central regions will have the lowest temperature of 18-21 degrees Celsius, mountainous areas below 17 degrees Celsius; average temperature of 20-22 degrees Celsius, mountainous areas below 20 degrees.
In the evening and night of October 31, the area from Gia Lai to Lam Dong and the South will have scattered showers and thunderstorms. The common rainfall is about 15-30mm.
People and tourists should be on guard against thunderstorms with the possibility of tornadoes, lightning, hail and strong gusts of wind.

Weather forecast for tonight, October 31 and tomorrow, November 1, nationwide:
Hanoi City
Lowest temperature: 19-21 degrees Celsius
Highest temperature: 21-23 degrees Celsius
Cloudy, rain. Northeast wind level 2-3. Cold weather.
Northwest
Lowest temperature: 18-21 degrees Celsius, some places below 17 degrees Celsius
Highest temperature: 23-26 degrees Celsius, some places above 26 degrees Celsius
Cloudy, rain. Northeast wind level 2-3. Cold weather, some places are cold.
Northeast
Lowest temperature: 18-21 degrees Celsius, mountainous areas below 17 degrees Celsius
Highest temperature: 21-24 degrees Celsius
Cloudy, rain. Northeast wind level 2-3, coastal areas level 3. Cold weather, some mountainous areas are cold.
Thanh Hoa - Hue City
Lowest temperature: 21-24 degrees Celsius
Highest temperature: 24-27 degrees Celsius
Cloudy, heavy rain, locally very heavy rain and thunderstorms. North to northwest wind level 2-3. The North is cold. 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: North 26-29 degrees Celsius; South 29-32 degrees Celsius
The North is cloudy, with heavy rain, some places have very heavy rain and thunderstorms. The South is cloudy, with scattered showers and thunderstorms, some places have heavy rain. East to northeast wind level 2-3. During thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind.
Central Highlands
Lowest temperature: 18-21 degrees Celsius, some places below 18 degrees Celsius
Highest temperature: 26-29 degrees Celsius
Cloudy, scattered showers and thunderstorms, locally heavy rain. Light wind. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Southern region
Lowest temperature: 23-26 degrees Celsius
Highest temperature: 29-32 degrees Celsius
Cloudy, scattered showers and thunderstorms, locally heavy rain. West to southwest wind level 2-3. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Ho Chi Minh City
Lowest temperature: 24-26 degrees Celsius
Highest temperature: 30-32 degrees Celsius
Cloudy, scattered showers and thunderstorms, locally heavy rain. West to southwest wind level 2-3. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.