Which month can it be warmer in the northeast?

In early April, the temperature will fluctuate between MINUS 5- plus 10 degrees, with large temperature difference and strong wind, which is a weather that hurts people but does not hurt water. At the beginning of May, the temperature will be between minus 5- plus 15 degrees, and occasionally it may be higher, which is suitable for traveling. It will enter summer after June, but due to Siping's unique landform, the weather will often be windy. The temperature will be between MINUS 10-20 degrees, and occasionally it will be higher. The highest temperature in summer is from mid-July to the end of August, and the temperature will be around-20-30 degrees, and occasionally it will be higher. I hope I can help you and wish you a happy life.