What's the temperature in Beijing in September? Was the maple leaf red at that time?

The weather in Beijing in September is not cool, and the highest temperature on sunny days is above 30 degrees Celsius. As for this maple leaf, you can't see it in September in Beijing. 10 ends 1 10 begins to look good. If you want to see it, you'd better not choose it during the festival, otherwise you won't see the scenery.