北京今夜最低气温-5℃，明天白天多云转晴，最高气温6℃

Group 1 - The weather forecast indicates a transition from clear to partly cloudy conditions tonight, with a minimum temperature of -5°C and a light wind from the south to north at 1-2 levels [1] - Tomorrow's daytime weather will shift from partly cloudy to sunny, with a maximum temperature of 6°C and a moderate wind from the north to south at 2-3 levels [1] - There is a significant temperature difference between day and night, advising the public to take precautions against the cold during early morning and evening outings [1]