ERROR: must be superuser to COPY to or from a file

Hello
I want to fill in a table from a file, but when I use the COPY command I get the following error:

mydb=> COPY weather FROM '/home/fideito/weather.txt';
ERROR:  must be superuser to COPY to or from a file
HINT:  Anyone can COPY to stdout or from stdin. psql's \copy command also works for anyone.

But, what can I do if I'm not root?