On a propane rig, as outside temps drop so does the gas pressure in the tank. Pressure/Temperature relation is directly proportional. We're up above 60*F most days of the year here. In MO. not so much. I won't use the gasser below 70*F. I have a Weber GA for quick cooks since it's just the Wife and I.
Lower Outdoor temps affecting cylinder pressure and wind will change the cooking characteristics of your rig big time. Consider a Weber coal rig like a OTS or OTG.
Good luck and Welcome to the forum.