2 sentences

1. 今天阴天，可能要下雨。

   jīn​tiān yīn​tiān, kě​néng yào xià​yǔ.

   It's cloudy today; it might rain.

   Source: Dong Chinese Dictionary

2. 今天是个阴天。

   jīn​tiān shì gè yīn​tiān.

   Today is a cloudy day.

   Source: Tatoeba