What changed
From October 21, most of central and eastern China will see little precipitation after a wetter-than-usual spell along and north of the Yangtze. Northern Xinjiang is the exception, with heavy snow and locally extreme blizzards expected in the Altay, Tianshan and Ili Valley areas.
Cold air will also push temperatures lower across the northeast, southwest, Jiangnan and southern China. Hangzhou’s forecast high is set to drop from about 31°C to 21°C in a day, before temperatures begin recovering from October 22.
Why it matters
China is moving through a sharp weather reset rather than settling into one stable pattern. Rain is fading across much of the centre and east, while snow intensifies in northern Xinjiang and rainfall builds around Taiwan from October 22.
The temperature swing will be especially abrupt south of the Yangtze. A warm day can turn jacket-worthy overnight, and the rebound will be temporary: another cold-air outbreak is forecast from October 24 to 27, bringing northern winds and temperature drops of 4°C to 6°C, with local falls of about 8°C.
Taiwan’s weather remains harder to pin down. Typhoon Chiang Pi may turn north toward Japan or continue westward toward China, so rainfall could strengthen from October 22, with torrential rain possible in places. Forecast timing and intensity will vary by location, but the broader message is clear: dry skies in much of central and eastern China, serious snow in northern Xinjiang, and another round of cold behind the brief recovery.
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