Annual road salt application for maintaining safe travel conditions is influenced by the number and characteristics of forecasted and actual ‘winter weather’ events. Previous studies have examined the implications of climate change on the number of days with near-0 ℃ temperatures and precipitation mix, but there are few estimates of how these changes affect the demand for road salt, and none for the Lake Simcoe watershed in Ontario, Canada. Here, historical daily climate data (1990-2025) from 11 stations in the Lake Simcoe watershed were used to quantify changes in days with near-0℃ temperatures, and days with precipitation by type. These trends compared to road salt usage from two local municipalities. Historical climate analysis revealed a small statistically significant increase in the number of days with temperatures near 0℃ at 1 site, and decreases at 2. 4 of 11 sites have statistically significant increases of 3.3 to 6.5 days with precipitation in at least one of the months of the salting season per decade , including one site with increases every month. 3 sites had statistically significant decreases of 3-11 days with snowfall for the month of February per decade. Salt application rates are highest for mixed precipitation (0.3 tonnes/lane-km/event), followed by snowfall and freezing rain (0.27 and 0.24 tonnes/lane-km/event), respectively. These results highlight the potential ameliorative effect of climate change on annual municipal salt application, however additional work is needed to evaluate how future climate change will influence the number of days with precipitation and days with temperatures near 0℃.