Shenyang city has a temperate humid continental climate with distinct four seasons and uneven distribution of interannual rainfall. Precipitation is mostly concentrated from June to August, making it a prone period for geological disasters. However, landslides, debris flows, and other geological hazards that are easily induced by precipitation are mainly distributed in low mountain and hilly areas, making them prone to natural geological disasters.
The annual precipitation in Shenyang City is 600-800 millimeters, with an average annual precipitation of 716.2 millimeters in the urban area from 1951 to 2010. The frost free period lasts for 155-180 days throughout the year. Due to the influence of the monsoon, precipitation is concentrated in summer, with large temperature differences and distinct four seasons. The winter cold lasts for a long time, nearly six months. From November 7th to 9th, 2021, Shenyang experienced the strongest snowfall on record: the snowfall at all 23 automatic snowfall observation stations in the city reached the level of a severe snowstorm, with an average total precipitation of 56.4 millimeters. At 08:00 on the 9th, the average snow depth was 34.1 centimeters, and the snowfall center was located in Liaozhong District, with a total precipitation of 81 millimeters and a maximum snowfall of 61.7 millimeters in 24 hours. Summer is short and rainy. On August 21, 1973, there was a heavy rainstorm of 215.5 mm. The temperature changes rapidly in spring and autumn, with a short duration: windy in spring and sunny in autumn.