First Frost 2025 Southern Ontario

First Frost 2025 Southern Ontario. Travel conditions deteriorate as snow hits southern Ontario Friday The Weather Network This simply means a period of time where you can safely set your plants out in your garden ensuring them with optimal growing temperatures during both day and night. The Far Northern areas of Ontario experience the earliest first frost occurring in mid August while Southern areas along the shores of Lake Ontario and Lake Erie eperience first frost in mid to late October

Plantmaps also created maps for many countries around the world that are in latitudes where frost occurs. Enter your location below and we will tell you when your average first frost and last frost dates are likely to happen

Headaches likely as Friday snow threatens slow Ontario commutes

Home (current) About; Home; Ontario First Frost Date Map; Map of Ontario Average First Frost Dates You can enter a zipcode or a location like City, State Home (current) About; Home; Ontario First Frost Date Map; Map of Ontario Average First Frost Dates

Southern Ontario faces rare thundersnow, major winter disruptions The Weather Network. Severe freeze: 24°F (-4.4°C) and colder—heavy. You can enter a zipcode or a location like City, State

Last Frost Of 2025 Steven E. Crosby. A frost date is the average date of the last light freeze in spring or the first light freeze in fall. Average frost-free period in climatic zones of Ontario (1976-2005) Zone Frost-free period (average in days) Average date of last spring frost Average date of first fall frost; A: 170-190: April 25: October 20: B: 160-170: April 30: October 13: C: 150-170: May 3: October 8: D: 130-165: May 11: October 1: E: 125-145: May 17.