How's the weather on April (10-20) in Beijing and Shanghai?

BJ: The temperature may range from 50 F to 70 F in the middle of April. There are several sunny days. The climate will be warm and comfortable.
Shanghai: The temperature of Shanghai would be higher. It may range from 60F to 70 F. You are advised to wear jackets, long-sleeved shirts, T-shirts, jeans and sneakers.