The National Center for Hydro-Meteorological Forecasting updates the weather forecast for tonight and tomorrow (April 23) in regions across the country.
The cold air mass from the North is continuing to move southward, while compressing a low pressure trough with an axis of about 23-26 degrees North latitude.
From the night of April 22, cold air will affect the Northeast region, then expand to other areas in the North and North Central regions, and some places in the Northwest region.
Wind turns to Northeast level 2-3, coastal areas level 3-4. Temperature decreases, Northern region commonly 20-23 degrees C, mountainous areas in some places below 20 degrees C; North Central region 21-24 degrees C.
From the night of April 22nd to April 23rd, the North will have showers and scattered thunderstorms, with locally heavy rain. From April 23rd, the weather will turn cool, with the lowest temperature of 21-23 degrees Celsius.
At sea in the Gulf of Tonkin area, there are scattered showers and thunderstorms. From near dawn on April 23, the Northeast wind turns strong at level 5, sometimes level 6, gusting at level 7. Sea is rough, waves are 1.5-2.5m high.

Thunderstorms with the possibility of tornadoes, lightning, hail and strong gusts of wind accompanied by extreme phenomena can affect agricultural production, causing trees to fall, houses and works to be damaged.
At sea, strong winds and big waves are dangerous for the operation of ships and boats, people and tourists need to proactively monitor and prevent.
Weather forecast for tonight April 21st and tomorrow April 22nd nationwide
Hanoi City
Lowest temperature: 23-25 degrees C Highest temperature: 25-27 degrees C Cloudy, showers and scattered thunderstorms, locally heavy rain.
Light wind, from night turns northeast wind level 2-3.In thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.From tomorrow, the weather will turn cool.
Northwest
Lowest temperature: 21-24 degrees C, especially Lai Chau - Dien Bien 20-23 degrees C, in some places below 20 degrees C Highest temperature: 27-30 degrees C, especially Lai Chau - Dien Bien 31-34 degrees C Cloudy, with rain, moderate rain and scattered thunderstorms, locally heavy to very heavy rain.
Light wind.In thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.From tomorrow, it will cool down.
Northeast
Lowest temperature: 21-24 degrees C, mountainous areas in some places below 20 degrees C Highest temperature: 24-27 degrees C, in some places above 27 degrees C Cloudy, with rain, moderate rain and scattered thunderstorms, locally heavy to very heavy rain.
Light wind, especially the Northeast area from night turns to northeast wind level 2-3, coastal areas level 3-4.In thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.From tomorrow, it will be cool.
Thanh Hoa to Hue City
Lowest temperature: 22-25 degrees C Highest temperature: 27-30 degrees C, the South 34-37 degrees C Cloudy, showers and thunderstorms in some places at night; the North has rain, moderate rain and scattered thunderstorms during the day, locally heavy to very heavy rain; the South has hot sunny days, intense hot sun in some places, showers and scattered thunderstorms in the late afternoon and evening tomorrow, locally heavy rain.
South to southwest wind level 2-3, especially the North at night light wind, daytime northeast wind level 2-3. In thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind. The North will turn cool tomorrow.
South Central Coast
Lowest temperature: 23-26 degrees C Highest temperature: 32-35 degrees C, the North 35-36 degrees C Cloudy, showers and thunderstorms in some places at night; sunny day, hot sunny in some places; especially the North sunny day, hot sunny in some places, scattered showers and thunderstorms in the late afternoon tomorrow, locally heavy rain.
Southeast wind level 2-3.In thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Central Highlands
Lowest temperature: 20-23 degrees C Highest temperature: 31-34 degrees C, in some places above 35 degrees C Cloudy, showers and thunderstorms in some places in the evening and at night; sunny day, hot in some places.
Light wind.In thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Southern region
Lowest temperature: 24-27 degrees C Highest temperature: 32-35 degrees C, in some places above 35 degrees C Cloudy, showers and thunderstorms in some places in the evening and at night; sunny during the day, hot in some places.
Light wind.In thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Ho Chi Minh City
Lowest temperature: 25-27 degrees C Highest temperature: 33-35 degrees C, in some places above 35 degrees C Cloudy, showers and thunderstorms in some places in the evening and at night; sunny during the day, hot in some places.
Light wind.In thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.