北京：大年初一将开启春节假日升温步伐

Core Viewpoint - The weather forecast indicates a significant drop in temperature and strong winds as the Spring Festival approaches, with specific warnings for cold weather and wind chill effects [1][10][24]. Weather Conditions - On February 15, the weather will be mainly sunny with a noticeable drop in temperature, ranging from 5 to 2°C, accompanied by a north wind of 3 levels, with gusts reaching 6 to 7 levels [1][3][5]. - The evening of February 15 will see a decrease in wind strength, with temperatures feeling cold, and precautions against colds are advised [3][4]. - On February 16 (New Year's Eve), the weather will be sunny with a temperature range of 7°C in plains and 5 to 8°C in mountainous areas, with a north to south wind of 2 to 3 levels [6][10]. Temperature Trends - From February 17 (New Year's Day) to February 20, daytime temperatures are expected to rise to between 11°C and 14°C, making it suitable for outdoor activities [11]. - A cold air mass will cause a temperature drop after this period, with some regions experiencing a decrease of 6 to 10°C, and localized areas in Jiangnan potentially seeing drops of over 12°C [24]. Safety and Health Advisories - Public advisories include precautions against strong winds and cold weather, particularly for outdoor activities during the Spring Festival [13][14]. - The dry weather conditions necessitate hydration and caution regarding fire and electrical safety [15].