I'm a Canadian attending grad school (PhD program) in the US. Are you in the sciences? I currently have an NSERC Postgraduate Scholarship (PGS). The application is usually due around the middle of October (October 15th this past year). The master's scholarship from NSERC (PGS-M if you're in the States) is one year of funding, so perhaps you can apply this fall for next year if you are in a science master's program that's two years long.
Unfortunately I don't know of anything that's still available for this fall.
naslund19 got a reaction from sharksaregreat in Canadians gaining funding for US Schools?