The fire season in the city is defined as that period in the spring, summer and fall months during which fires are deemed to be extra hazardous. The beginning date of the fire season each year shall be set by the city council, after considering the fire chief’s recommendation. Notice of commencement of the fire season shall be published in one issue of the official city newspaper, at least two days before the fire season starts. The ending date of the fire season each year shall be similarly determined and notice thereof similarly published.