今天（10日）白天，北京晴朗在线，西部山区有雷阵雨出没，最高气温在32℃左右。明天，北京天空云 量有所增多，西部和北部有分散性雷阵雨，闷热感持续。 昨天白天，北京晴朗天气唱主调，紫外线强烈，大部地区最高气温在33至34℃，炎热在线。 今明两天，北京多弱短波槽活动，有分散性雷阵雨。北京市气象台预计，今天白天晴转多云，西部山区 有雷阵雨，北转南风2至3级，最高气温32℃；夜间多云间阴，有分散性雷阵雨，南风2级左右，局地阵 风7级左右，最低气温23℃。 明天白天，北京多云转阴，西部和北部有分散性雷阵雨，偏南风3级左右，阵风5级，最高气温31℃；夜 间阴转多云，南转北风1至2级，最低气温24℃。 气象部门提醒，今明两天北京有分散性雷阵雨来扰，建议公众外出随身携带雨具，注意防雷避雨。同 时，天气持续闷热，建议大家尽量减少在中午时段户外活动，及时补充水分，注意防暑。 （来源：中国天气网） △今晨，北京天气晴朗 ...

Core Viewpoint - The upcoming weather forecast indicates significant rainfall across northern China and the impact of Typhoon "Wipha" on southern coastal regions, necessitating public awareness and preparedness for potential secondary disasters. Group 1: Rainfall Forecast - Strong rainfall is expected in northern regions from July 19 to 21, with areas like Shandong and Liaoning experiencing heavy downpours [1][2] - The Central Meteorological Observatory predicts heavy rain in various regions including Qinghai, Gansu, Ningxia, and parts of southern China, with localized areas facing severe rain [3][4] - The forecast includes a warning for potential extreme rainfall in coastal areas of Guangdong, Guangxi, and Hainan due to Typhoon "Wipha" making landfall [2][4] Group 2: Temperature Changes - As rainfall increases, high temperatures across China are expected to decrease, although regions like Jianghuai and northern Jiangnan may still experience prolonged heat [7][9] - High temperature warnings remain in effect for areas such as Xinjiang, Chongqing, and Shaanxi, with some regions exceeding 40°C [7][9] - The public is advised to take precautions against heat in areas that will not be affected by rainfall, as cities like Hefei and Nanjing may see high temperatures persist for several days [9]