In Lao Cai province, the southern edge of a low-pressure trough with its axis at approximately 23-26 degrees North latitude is being compressed and gradually pushed southward, then filled up by a strengthening continental high-pressure system in the north. Therefore, the weather in the province will be as follows: Partly cloudy, with scattered showers and thunderstorms at night, sunny during the day. East wind at level 2. High mountainous areas will experience cold weather at night and in the morning. Thunderstorms accompanied by tornadoes, lightning, hail, and strong gusts of wind may affect agricultural production, causing trees to fall, damaging houses, transportation infrastructure, and other facilities. The cold weather at night and in the morning in high mountainous areas may affect the health of the elderly and young children. From the night of October 4th, the weather will cool down, with cold weather at night and in the morning in high mountainous areas (very cold at night and in the morning). The lowest temperatures during this cold spell will be 20-22°C in lowlands and 16-18°C in highlands. In mountainous areas, temperatures range from 13 to 15°C.

According to the National Center for Hydro-Meteorological Forecasting, Hanoi will have sunny weather during the day, with some areas experiencing hot temperatures; there will be occasional showers and thunderstorms at night. Ho Chi Minh City will have scattered showers and thunderstorms, especially in the afternoon and evening, with localized heavy rain. The area from Thanh Hoa to Hue will be cloudy, sunny during the day, with some areas experiencing hot temperatures; there will be scattered showers and thunderstorms in the late afternoon and evening.

At sea, on October 3rd, day and night, the northern Gulf of Tonkin will experience scattered showers. Visibility will be over 10km. South winds will be at force 3. Waves will be 0.5-1.5m high. From October 5th, the northern part of the South China Sea will experience strong northeast winds of force 6-7, gusting to force 8-9, with waves 2-4m high and rough seas. From October 6th, the strong wind area will continue to expand to the northern South China Sea, including the Hoang Sa (Paracel) Islands.

Weather forecast for day and night of October 3rd in various regions across the country:

Hanoi area: Cloudy, sunny during the day, hot in some areas; scattered showers and thunderstorms at night. Southeast to south winds, 2-3 Beaufort scale. Possibility of tornadoes, lightning, and strong gusts of wind during thunderstorms. Lowest temperature 24-26°C. Highest temperature 34-35°C.

Northwestern Vietnam: Cloudy, sunny during the day, hot in some areas; scattered showers and thunderstorms in the evening and at night. Light winds. There is a possibility of tornadoes, lightning, and strong gusts of wind during thunderstorms. Lowest temperature 24-27°C, below 23°C in some areas. Highest temperature 32-35°C, above 35°C in some areas.

Northeastern Vietnam: Cloudy, sunny during the day, hot in some areas; scattered showers and thunderstorms in the evening and at night, especially in mountainous areas with scattered showers and thunderstorms, locally heavy rain in some places. Southeast to south winds at 2-3 Beaufort scale. Tornadoes, lightning, and strong gusts of wind are possible during thunderstorms. Lowest temperature 23-26°C, below 22°C in some mountainous areas. Highest temperature 32-35°C, above 35°C in some places.

Thanh Hoa to Hue: Cloudy, sunny during the day, hot in some areas; scattered showers and thunderstorms in the evening and at night. Light winds. There is a possibility of tornadoes, lightning, and strong gusts of wind during thunderstorms. Lowest temperature 25-28°C. Highest temperature 32-35°C, exceeding 35°C in some areas.

South Central Coast: Cloudy, sunny during the day, scattered showers and thunderstorms in the evening and at night. Light winds. There is a possibility of tornadoes, lightning, and strong gusts of wind during thunderstorms. Lowest temperature 24-27°C. Highest temperature 32-35°C.

Central Highlands: Cloudy, sunny during the day, scattered showers and thunderstorms in the evening and at night. Light winds. There is a possibility of tornadoes, lightning, and strong gusts of wind during thunderstorms. Lowest temperature 20-23°C. Highest temperature 29-32°C.

Southern Vietnam: Cloudy, with scattered showers and thunderstorms in some areas, especially in the afternoon and evening, with locally heavy rain. Light winds. There is a possibility of tornadoes, lightning, and strong gusts of wind during thunderstorms. Lowest temperature 23-26°C. Highest temperature 31-34°C.

Ho Chi Minh City: Cloudy, with scattered showers and thunderstorms in some areas, especially in the afternoon and evening, with locally heavy rain. Light winds. There is a possibility of tornadoes, lightning, and strong gusts of wind during thunderstorms. Lowest temperature 24-26°C. Highest temperature 32-34°C.

Source: https://baolaocai.vn/thoi-tiet-ngay-310-post910998.html