Frost Date Selector Page for Canada

Search for Your Average Canadian
First and Last Frost Dates



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Use this section of our site as a guide to help you estimate the average date on which can expect the last frost to occur in the late winter / spring as well as the first one in the fall. For this site, a frost is defined as a light freeze of temperatures ranging from 29 to 32 degrees F. (-2 to 0 degrees C).

Select a province:

Based on statistics, there is a 10% chance that a frost will occur outside of the dates listed. Whether or not a specific plant will be damaged depends on the type of plant, the maturity of the plant, the temperature, the duration, as well as many other variables.

Source: Environment Canada. Dates are calculated based on a 30 year rolling average of the last spring and first fall frosts from station data compiled between the years 1961 to 1990. Those locations marked with an asterisk are averaged from the dates 1951 to 1980.

Temperature Conversion Calculator