will vs be going to. 2

Here is no cloud in the sky. It --------- a lovely day.

1) will be

2) is going to be


In grammar-related books, there is a common sentence showing the usage of "be going to".
- Look at those clouds. It's going to rain.

However, to me, the OP is different. I think "a lovely day" is a mere opinion, and has nothing to do with "what is likely to happen in the near future". So, both #1 and #2 sound correct to me.

What do you think?

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