What Does "~ Kana" Mean at the End of Sentence in Japanese?

Women in Tokyo, Japan
Masahiro Hayata/Wikimedia Commons/Creative Commons 2.0

For new students learning Japanese, you'll eventually come across sentences ending with "kana." Sometimes from the context, it's difficult to tell what "kana" means. How does it translate into a sentence? Here's the basic breakdown of this unusual Japanese sentence structure (unusual to English speakers, at least):

When you see Kana at the end of a sentence, it is essentially inferring the English equivalent of "I wonder." It's a relatively casual expression, and used quite often in conversation. Instead of just asking the question, it's a way of couching it a bit, to encourage the listener to "wonder" as well. 

Here are some examples:

Ashita yuki ga furu kana.
I wonder if it will snow tomorrow.
Ano hito wa supein-jin kana.
I wonder if he/she is Spanish.

"~ kashira (~かしら)" can be replaced with "~ kana", though it is used only by females.

Kore ikura kashira.
I wonder how much it is.
Dou shita no kashira.
I wonder what happened.

Here are some more phrases with "~ kana."

Nani o kite ikou kana.
What shall I wear?
Mattete kureru kana.
I wonder if he/she will wait for me.
Machiawase-basho machigaeta kana.
I wonder if I am waiting
in the wrong place.
Okane, ato ikura nokotteru kana.
I wonder how much money I have left.
I wonder if next year will bring
something good.

To ask the question and add an element of doubt or uncertainty "I wasn't sure whether it would snow" you would add の(no) forming "nokana."