Why is it が and not は for the bolded particle?:

> お寺を見に行くつもりでしたが、天気 **が** よくなかったから、行きませんでした。  
>  We were planning to go to see a temple, but we didn't because the weather
> was not good.

Is it also OK to replace that section 天気がよくなかったから with よくなかった天気でしたから?
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2020-05-29T04:28:27.497
77693
2020-10-26T07:05:45.613
2020-05-29T04:39:03.763
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question
grammar
Why が instead of は here for reasoning clauses?
In Japanese grammar, が is usually used with subjects in subordinate clauses
and は is often used with subjects in main clauses.

よくなかった天気でしたから is correct in grammar, I think, but it sounds weird. よくなかった and
でした are both expressions of past tense, so it should become duplicate when
appearing in one sentence.
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2020-05-29T05:07:56.570
77694
2020-05-29T05:07:56.570
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answer