Ask the weather in Lanzhou in September and pay attention to your clothes. .

In September, the weather in Lanzhou gradually turned cold. Without the heat of summer, there will be more autumn rain and some coolness. Basically the temperature is above 20 degrees. If you come to school, you usually wear trousers and short sleeves in September. If it rains, you can take a thin coat. Just prepare thinner spring and autumn clothes.

Lanzhou has a temperate continental climate. The annual average temperature is 65438 00.3℃. There is no heat in summer and no cold in winter. This is a famous summer resort. The annual average sunshine hours are 2446 hours, the frost-free period is 180 days, and the annual average precipitation is 327mm, mainly from June to September.

Gansu is located in the deep inland of northwest China, where warm and humid air currents are difficult to reach and there are few opportunities for rainfall. The climate in most areas is dry and belongs to temperate monsoon climate, which is continental. Winter is cold and long, the boundary between spring and summer is unclear, summer is short, the temperature is high, and the temperature drops quickly in autumn. The annual average temperature in the whole province is between 0 ~ 16℃, with different altitudes, large temperature difference, abundant sunshine and large daily temperature difference.

The annual precipitation in all parts of the province is 36.6 ~ 734.9 mm, decreasing from southeast to northwest. The precipitation in the west of Wushaoling is obviously reduced, and the precipitation in Longnan Mountain area and the east of Qilian Mountain is more. Affected by the monsoon, precipitation is mostly concentrated in June-August, accounting for 50%-70% of the annual precipitation. The frost-free period in the province varies greatly from place to place. Longnan Valley is generally about 280 days, and Gannan Plateau is the shortest, only 140 days.

The altitude in most places is between 1500m and 3000m, and the annual rainfall is about 300mm (40-800mm). The climate varies greatly from place to place, and the ecological environment is complex and diverse.