Last Frost Date Hamilton Ontario 2024. Our frost date calculator will tell you precisely when your garden in hamilton, on is at risk for frost. Chance is a prediction of how ideal the conditions are for a storm to enter the region.

Plantmaps has derived zones indicating the interactive map of average annual first frost dates for the province of ontario. The average last frost has actually been november 10, with the earliest frost being october 31, and latest first frost being november 26, so that means the first frost dates for my.