China Faces Two Successive Cold-Air Masses as Southern Rain Continues

What changed

China is moving into a six-day sequence of rain, snow and two cold-air incursions from November 4 to 9. Southern China will see widespread rain, with another rain phase developing on November 6, while parts of the northeast face snow and sharp temperature drops.

The swing will be stark in Changchun: a forecast high of 14°C on November 4 is expected to fall to 1°C on November 5 and -1°C on November 6. In the northeast, North China and Huanghuai, temperatures may drop 4–8°C, with local falls exceeding 10°C.

Why it matters

This is a weather pattern defined by overlap rather than one dramatic event. Rain is continuing across the south just as cold air pushes into the north and northeast. That means slick roads and poor visibility in already-wet areas, while some northeastern locations shift quickly from rain to snow or freezing rain.

The first cold-air push runs from November 4 to 6. A second arrives from November 7 to 9, when temperatures across much of China are forecast to reach their lowest levels in roughly six months. Parts of northwest and North China may see highs near 10°C on November 7; in the Yangtze-Huaihe and Jiangnan regions, highs around 15°C on November 8 will feel colder alongside persistent rain. Southern China may still reach about 25°C on November 9, but that will be a notable cool-down there as well.

The practical risk is cumulative. Repeated rain can leave roads slippery, visibility reduced and conditions more vulnerable to secondary disasters, while the fast temperature reversals make a single set of travel or clothing assumptions unreliable. The second rainfall phase may still change in timing or strength, so the most important signal is the sequence itself: wet conditions in the south, snow in parts of the northeast and cold air arriving in two successive waves.