北京本周五西部北部再飘雪，最高温将短暂跌至冰点上下

Weather Summary - The weather on January 27 is expected to be mostly sunny with a maximum temperature of 4°C in plain areas and 1-4°C in mountainous regions, with a minimum relative humidity of 20% [6] - The night temperature will drop to -6°C in plain areas and -12 to -9°C in mountainous areas, with a maximum relative humidity of 50% [6] - On January 28, the weather will be cloudy with a maximum temperature of 2°C in plain areas and 0-3°C in mountainous regions, with a minimum relative humidity of 35% [6] - The night temperature on January 28 will be -5°C in plain areas and -11 to -8°C in mountainous areas [6] - On January 29, the weather will transition from cloudy to partly cloudy, with a maximum temperature of 2°C in plain areas and 0-2°C in mountainous regions [7] - The night temperature on January 29 will be -4°C in plain areas and -9 to -6°C in mountainous areas [8] Upcoming Weather Trends - By the end of January, cloud cover will increase, and light snow is expected in the western and northern regions around January 30, with daytime temperatures dropping to around 0°C [10] - The cooling period is expected to be short, followed by a stable temperature recovery [10] - A significant cold front is anticipated to bring widespread rain and snow starting from January 29, with a notable drop in temperatures [19]