Which month will it not be cold in Henan?

It won't be cold in Henan from May to June. During this period, the highest temperature in many places in Henan Province will rush to 25 degrees Celsius and begin to pick up. The weather is hottest in July and August, and the temperature drops after 1 1. The topography of Henan province is north-south, connecting east and west, with high topography in the west and low topography in the east, which is composed of plains and basins, mountains, hills and water surfaces. The four major river basins, namely, the cross-sea river, the Yellow River, the Huaihe River and the Yangtze River, are mostly located in the warm temperate zone, and the south is subtropical, which belongs to the continental monsoon climate of transition from the northern subtropical zone to the warm temperate zone. A month is a unit of time in a calendar. Traditionally, the length of a month is based on the cycle of the moon phase change. The length of a month (lunar month) is about 29.53 days, that is, a round of "Wang Shuo Yue". In the early Paleolithic period, people had calculated the days according to the phases of the moon.