shouldn’t for prediction

[diamondcutter]

--The weatherman said it will rain tomorrow.Do you agree?
--No, it shouldn’t rain tomorrow.

(written by me)

Could you tell me if my use of “shouldn’t” is correct? I mean if "shouldn't" could be used for prediction?

 

[tedmc]

--The weatherman said it will rain tomorrow.Do you agree?
My answer is, "No, it shouldn’t rain tomorrow".

(written by me)

Could you tell me if my use of “shouldn’t” is correct? I mean,[STRIKE] if[/STRIKE] can "shouldn't"[STRIKE] could [/STRIKE]be used for prediction?

Yes, "shouldn't" is used to say that something is probable.

 

[GoesStation]

"Shouldn't" might be understood, but it's much more natural to say it's not supposed to rain tomorrow.

 

[Tdol]

It works for me- maybe it's a BrE thing.

 

[jutfrank]

It's fine. Yes, you can understand this use of should as a prediction of sorts, but I think it's better to call it an expectation.

 

[diamondcutter]

If I want to show my highest certainty of prediction, should I say Sentence 1 or 2 as follows?

1. It can’t rain tomorrow.

2. It won’t rain tomorrow.

 

[GoesStation]

Sentence 2.

 

[diamondcutter]

Thanks, GoesStation.

Do you mean we can’t use “can’t” to make a future prediction?

What about this?
It can’t rain tomorrow. Tomorrow’s the first day of our sports meet.

Can I use the sentence--It can’t rain tomorrow--to make a wish in this context?

 

[probus]

Had you provided that additional context in your first post you'd have gotten a different answer. Without context Sentence 1 would just puzzle people.

 

[diamondcutter]

Thanks, Probus.

1. I think what you mean is that in the following context It can’t rain tomorrow makes sense. It’s used to make a wish.

--The weatherman said it will rain tomorrow.
--Oh, no. It can’t rain tomorrow. Tomorrow’s the first day of our sports meet.

2. I’d like to make sure of this.
People don’t use “can’t” to make a future negative prediction. People use “won’t” to make a future negative prediction with the highest certainty.

 

[Tdol]

It can't rain tomorrow sounds a bit like King Cnut not turning the tide back, though he was trying to show his followers that he was mortal and couldn't control the oceans.