How do you say

What is the forecast for Beijing in the next few months?

..in Chinese?

北京未来几个月天气预报是怎样的?

běi jīng wèi lái jǐ gè yuè tiān qì yù bào shì zěn yàng de ?

How do you say "My friends and I are planning to travel to Qinghai Lake in three months." in Chinese?