北京今日山区及夜间风力较明显，最高7℃，最低-6℃

Group 1 - The weather forecast for Beijing indicates a mix of sunny and cloudy conditions during the day with a maximum temperature of 7°C [1] - Wind conditions are expected to be moderate, with north winds at levels 2 to 4 during the day and gusts reaching levels 6 to 7 in mountainous areas [1] - At night, the weather will remain clear to partly cloudy with a minimum temperature of -6°C and winds at level 3, with gusts up to level 5 or 6 [1] Group 2 - There is a notable emphasis on wind and cold conditions in mountainous areas and at night, advising caution against wind and cold exposure [2] - The forecast highlights dry conditions, prompting warnings about fire and electrical safety [2]