Thorold, in Ontario, Canada, is home to roughly 18,800 people in the Eastern Time Zone at 43.1°N latitude.
In 2025, Thorold recorded an average annual temperature of 50°F — about 1.9°F above the 30-year normal of 48°F. The hottest day reached 97°F in June; the coldest was -4°F in January. Total precipitation was 33 inches (near normal). The wettest month was May.
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