Learn Hardcore Hebrew: כנראה נישאר בבית הערב, כי שנינו עייפים מאוד. - We will probably stay at home this evening, because we are both very tired.

Breakdown of כנראה נישאר בבית הערב, כי שנינו עייפים מאוד.

What does כנראה mean here, and is it the same as apparently?

In this sentence, כנראה means probably.

Depending on context, כנראה can mean either:

Here, with a future verb (נישאר), the most natural English meaning is probably:

It often appears near the beginning of the sentence, but Hebrew word order is fairly flexible.

Why is נישאר translated as we will stay even though there is no separate word for we?

Because the verb itself already shows the subject.

נישאר is the 1st person plural future form of the verb להישאר (to stay / to remain), so it already means:

The prefix נ- often marks we in the future tense.

So Hebrew does not need אנחנו here, although you could add it for emphasis:

Usually, though, the pronoun is omitted because the verb already makes it clear.