When is the last frost in Listowel, ON?

The average last spring frost date in Listowel, ON is May 14. This is when it is generally safe to plant frost-sensitive vegetables and flowers outdoors.

When is the first frost in Listowel, ON?

The average first fall frost date in Listowel, ON is Sep 30. Plan to harvest frost-sensitive crops before this date.

How long is the growing season in Listowel, ON?

The growing season in Listowel, ON is approximately 138 days, measured from the last spring frost to the first fall frost.

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Frost Dates for Listowel, ON

Location Listowel, ON

Frost Dates

Listowel, ON

Use our 2026 Frost Dates Calculator to find the first fall frost and last spring frost dates for your area, based on historical climate data from the weather station nearest your ZIP or Postal Code.

Nearest Climate Station	Altitude	Last Spring Frost	First Fall Frost	Growing Season
GLEN ALLAN, ON	1312'	May 14	Sep 30	138 days

Last and first frost dates are 33% probability. Calculated using 1981-2010 Climate Normals from Environment Canada.

There is a 3 in 10 chance of temperatures reaching 32°F (0°C) or lower after the listed spring date or before the listed fall date. Use these dates as a guide, not a guarantee.