First Frost 2024. The classification of freeze temperatures is based on their effect on plants: 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.
We’ve created average first frost dates, average last frost dates and average number of days with frost maps for most us states and candian provinces. Scroll down further to find two tables, each giving the estimated dates for 90%, 50%, and 10% chance of.