Can the conditional と be used to talk about a fact that will for sure happen if the condition is met?


I'm wondering if と, which _the Dictionary of Basic Japanese Grammar_ says
leads to a uncontrollable event, is, in addition to this, used with the
meaning of a fact that will for sure happen if the condition is met.

I ask because I am unsure if sentences with hypotheses in the main clause can
be used with と, like:

> 雨が降ると、明日の試合は中止するかもしれない。  
>  If it rains, tomorrow's match might be canceled.
>
> この間食を摂ると、お腹がいっぱいになるでしょう。  
>  If you take this snack, you probably will be full.

Moreover, can you use conjecture with と? This phrase, for instance, sounds
weird?

> カナリアの鳴き声がよく聞こえないと、耳が遠くなってきたようです。  
>  If I cannot hear well the cries of canaries, it will appears that I am
> going deaf.




> カナリアの鳴き声がよく聞こえないと、耳が遠くなってきたようです。

sounds wired.  
The thing `'I cannot hear well the cries of canaries'` have nothing to do with
the `'going deaf'`.

> If I cannot hear well the cries of canaries, it will appears that I am going
> deaf.

I will translate that.

> もしカナリアの鳴き声がよく聞こえないなら、それは私の耳が悪くなってきたことの現れでしょう。

* * *

One more case,

> カナリアの鳴き声がよく聞こえないと、耳が遠くなったのではないかと心配になります。

is natural.  
The thing `'I cannot hear well the cries of canaries'` have something to do
with the `'心配になる( feel worried )'`.

