Elle Marthena

First Frost 2024 Southern Ontario 2024. Enter your zip or postal code in the field above to see frost dates for your location (based on the nearest weather station), as well as the length of your growing season. Ontario’s winter will be filled with a whirlwind of both snow and rain while the best chances of a white winter being in the prairies.

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. Planting dates for spring and fall;