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About Climate, Weather & Gardening Calculators

These calculators help Canadians understand and plan for local weather conditions. The Humidex and Wind Chill calculators provide "feels like" temperatures based on Environment Canada formulas. The Climate Days tool tracks growing degree days and frost-free periods for gardeners. Snow load calculations assist with roof safety assessments. Winter road maintenance tools estimate salting, plowing, and cleaning times for Ontario highways and Toronto streets.

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⚠️ These Estimation & Eligibility tools provide general guidance based on publicly available rules.

Last Updated: March 2026 | Official Determination Required