| < September >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Number of Wet Days (probability of rain on a day)
|Average Sunlight per day
|Average Daylight per day
|Sunny (Cloudy) Daylight Hours
|Sun altitude at solar noon on the 21st day.
- The average temperature in Lanzhou in September is very mild at 15.7 °C (60.26 °F).
- Afternoons can be really warm with average high temperatures reaching 22 °C (71.6 °F).
- Overnight temperatures are generally quite mild with an average low of 10.9 °C (51.6 °F).
- In September the average daily temperature range/ variation is 11.1 °C (20 °F).
- The weather in September is a little parched with rain occasionally. A mere 46.3mm (1.8in) of H2O is laid down during an average of 12 days.
- The heavens above Lanzhou are slightly fair with on average a mediocre 5:07 of intense sunlight per day.
- The shortest day is 11:48 long and the longest day is 12:55 long with an average length of 12:22.
- There are approximately 7:04 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
- It is sunny approximately 42% of daylight hours and cloudy 58% of daylight hours.
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Weather Trend Graph for September in Lanzhou, China
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