When will the weather in the northeast get warmer?

According to the season, the temperature will gradually increase in March, gradually warm in April and completely warm in May. Northeast China, referred to as Northeast, Northeast, Northeast or Northeast provinces, is the geographical region of China and also belongs to the second economic zone. It is related to Yingzhou, Liaodong, Guandong, Guanwai and Manchuria, but the specific geographical scope is different.