Please keep in mind non-ethanol gas will go bad on you. From everything I've read it takes 5 to 6 months, irrespective of where you live. Ethanol gas will begin degrading in 30 days and in 3 months will border on being worthless as fuel. Add one of the products like Sta-Bil if you choose to leave gas in your tank no matter whether it contains ethanol or not. Add more than is suggested if you have a long winter. Once gas goes bad it turns orange, doesn't burn well, burns with greatly more soot and smoke, smells very bad when burning and invariably leaves a gummy varnish-like residue. Good luck.
