Historical Weather in Toronto, Canada
See 55+ years of weather history for any date in Toronto going back to 1970.
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Monthly Climate Averages
Historical temperature and precipitation averages for Toronto, Canada, based on 55+ years of weather data.
Temperatures shown in Celsius with Fahrenheit in parentheses. Rainfall in millimetres, snowfall in centimetres.
Toronto Weather by Month
January in Toronto has become 1.5°C (2.7°F) warmer on average: the 2011–2025 average against 1970–1989.
February in Toronto has become 1.0°C (1.9°F) warmer on average: the 2011–2025 average against 1970–1989.
5 of the 10 warmest Marches on record in Toronto have come since 2011.
The coldest April reading, -12°C (11°F) on April 7, 1972, has not been matched in 53 years.
The May heat record, 33°C (91°F) on May 17, 1977, has stood for 48 years.
Toronto's hottest June day on record is a recent one: 37°C (98°F) on June 25, 2025.
July 2025 was the 2nd warmest July in 55 years of records, 2.7°C (4.9°F) above the long-run average.
5 of the 10 warmest Augusts on record in Toronto have come since 2010.
September 2024 was the 2nd warmest September in 54 years of records, 2.7°C (4.8°F) above the long-run average.
6 of the 10 warmest Octobers on record in Toronto have come since 2010.
5 of the 10 warmest Novembers on record in Toronto have come since 2010.
December in Toronto has become 1.9°C (3.4°F) warmer on average: the 2010–2024 average against 1970–1989.
Source: NOAA GHCN-Daily, Toronto (1971–2003); Toronto City (2002–2025). Records through 2025.