中国气象局：预计“五一”假日前期，中东部大部以晴到多云天气为主

Group 1: April Weather Characteristics - April experienced warm and dry weather, with an average temperature of 12.7°C, which is 1.7°C higher than the historical average and the second highest since 1961 [2] - National average precipitation was 32.7 mm, 13.3% lower than the historical average, with some regions experiencing a decrease in precipitation by 20% to 100% [3] - A nationwide cold wave affected most regions, causing strong winds and severe weather events, with gusts reaching up to 15 levels in some areas [4] Group 2: May Holiday Weather Forecast - The early part of the May holiday is expected to be mostly sunny, with light to moderate rain in some regions, while the latter part will see significant rainfall in the southwest and southern regions [5][6] - Temperature fluctuations are anticipated, with northern areas experiencing a drop of 4-8°C due to cold air, while other regions may be close to or above the historical average [5] Group 3: May Climate Trend Predictions - Precipitation is expected to be above the historical average in northeastern regions and parts of Inner Mongolia, while most other areas will see average to below-average precipitation [7][8] - Temperatures in most regions are projected to be close to or above historical averages, with three cold air events expected to impact northern areas [8] Group 4: Key Areas of Concern for May - Attention is needed for meteorological droughts and dry winds affecting crop growth, particularly in the northwest and central regions [9] - Risks of strong winds, sudden temperature drops, and sandstorms are heightened in northern areas due to frequent cold air activities [9] - Potential for secondary disasters from heavy rainfall and low temperatures in southern and southeastern regions, necessitating monitoring and preparedness [9]