Should there be a comma before "according"?

English as a Second Language English Vocabulary, Grammar and Idioms
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  • It’s going to rain later this evening according to the weather forecast.

Should there be a comma before “according”?

Thanks.

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I’m not sure, but I think it’s optional. It might depend on whether you consider it restrictive or non-restrictive.

If the order is reversed, then there should be a comma.

According to the weather forecast, it’s going to rain later this evening.

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I don’t think it is necessary.

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