Just to add a note to what others have said - the colder the water, the less the trout will move for whatever you are throwing in the water. Sometimes you almost have to hit them on the nose to get them to take anything. Carrying a thermometer and taking note of the water temp each time you fish will help you get an idea when you are more likely to catch fish in your local water.

Its not silly to fish in winter - but fortunately not many people know that, or are willing to put up with the conditions encountered. Like Betty said, you'll likely have the run of the river to yourself - except for the eagles, osprey, beaver, muskrats, deer, moose, ducks, geese, and, if you are really lucky, trumpeter swans !!!! You may work harder to catch fewer fish, but so what ? You'll catch memories that few people will ever have.