You can use baker's yeast but brewing yeast is far superior for wine and cider. Brewing yeast is designed to drop out quickly into a nice solid cake at the bottom and to not impart any yeasty flavours. Baker's yeast takes a long time to clear and the cake at the bottom will slosh up into the drink very easily, making racking difficult.
It'll be too cold to brew outside at this time of year. You're better off doing the fermenting indoors and, when the airlock stops moving, then rack it off and store it outside or in the loft to condition. Don't worry too much about the temperature inside if it's below 18-21 degrees, it just means the brew will take slightly longer. A long cool brew will make a more mellow drink than a fast hot brew.