2025 First Frost. First and last frost dates for dates how to read these charts for the fall as your growing season comes to an end, the nightly temperatures for dates start to go down, and therefore every day that goes by increases the chance. It is determined using historical weather data and signals the end of the growing season for gardeners.
Your first frost date is the approximate date in autumn when the first frost is expected to occur in your location. The last frost date in spring is the date after which the risk.