How are you today?

It is beautiful weather today,the sunlight is very warm.I like it,my dog is happy too.

The weather is beautiful today, it is also very warm (outside). I really love it and I think my dog is happy with it too.

The word inside the brackets is optional. "It is beautiful weather today" is not grammatically wrong but I would just say like what I just corrected for you. And I think we do not say the sunlight is warm. Also, your dog looks ultra happy and kawaii in this picture. Cheers!