How do you say

I’m planning to travel to Yunnan next month.

..in Chinese?

我打算下个月去云南旅游。

wǒ dǎ suàn xià gè yuè qù yún nán lǚ yóu 。

How do you say "The engineers are forecasting that for the next three months, it’ll be cloudy to overcast with light rain, and temperatures will range from fifteen to twenty-five degrees Celsius." in Chinese?