Questions & Answers about Si plou, no quedarem a la plaça; tornarem a casa.
Si means if.
Catalan makes an important spelling distinction:
- si = if
- sí = yes
So in this sentence, Si plou means If it rains. The version with an accent, sí, would be wrong here.
After si meaning if, Catalan normally uses the present indicative for a real future possibility:
- Si plou... = If it rains...
This works much like English, where we say If it rains, we’ll go home, not normally If it will rain...
So the pattern is:
- si + present
- main clause in future if the result is in the future
That is exactly what you have here:
- Si plou
- no quedarem...; tornarem...