Last Frost Ontario 2024. Use our 2024 frost dates calculator to find the average dates of the last light freeze of spring and the first light freeze of fall for locations across the u.s. Extended periods of pleasant fall weather are expected to last well into october, especially across the eastern half of the country.
314 rows plantmaps has derived zones indicating the interactive map of average. Your zone at most is going to give you an indication of what perenials can be planted in your area.