What's the weather like in Jilin in October?

The temperature difference between morning and evening is relatively large, about 18 to 20 degrees.

It's still warm when the sun is shining during the day. You can only wear a small shirt or two-piece suit, but it will be cold when the sun goes down at night, so you should add a coat.

/kloc-it will be cold indoors in October, not as warm as outdoors, so it is suitable for outdoor activities.