City crews will also perform winter street cleaning when temperatures rise above 32°. The process divides the city's streets into four priority categories. Priority 1 streets will receive cleaning first at the beginning of each occurrence of a temperature change of about 32°. If Priority 1 streets have been swept within one week prior to the most recent occurrence, then sweeping can proceed according to the next priority.
During the month of March, the city will clean all four winter cleaning priorities before proceeding to clean all non-priority routes.