Toronto City climate by month
Averages and records for each calendar month at Toronto City, Canada, from 1840 to 2003. The warmest month is July, averaging 26.3°C; the coolest is January at −1.2°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −1.2°C | −8.4°C | 16.1°C25 January 1967 | −32.8°C10 January 1859 | 163 / 163 |
| February | −0.9°C | −8.5°C | 14.4°C25 February 1976 | −31.7°C5 February 1855 | 163 / 163 |
| March | 3.4°C | −4.1°C | 26.7°C28 March 1946 | −26.7°C3 March 1868 | 164 / 164 |
| April | 10.7°C | 2.0°C | 32.2°C22 April 1842 | −15.0°C1 April 1923 | 164 / 164 |
| May | 17.5°C | 7.6°C | 34.4°C18 May 1962 | −3.9°C6 May 1854 | 164 / 164 |
| June | 23.2°C | 12.9°C | 36.7°C30 June 1964 | −2.2°C10 June 1842 | 164 / 164 |
| July | 26.3°C | 15.9°C | 40.6°C8 July 1936 | 3.9°C12 July 1843 | 163 / 163 |
| August | 25.2°C | 15.2°C | 38.9°C13 August 1918 | 4.4°C18 August 1855 | 163 / 163 |
| September | 20.8°C | 11.4°C | 37.8°C2 September 1953 | −2.2°C22 September 1842 | 163 / 163 |
| October | 13.8°C | 5.5°C | 30.0°C7 October 1963 | −8.9°C31 October 1844 | 163 / 163 |
| November | 6.8°C | 0.4°C | 23.9°C1 November 1950 | −20.6°C30 November 1875 | 163 / 163 |
| December | 1.0°C | −5.4°C | 19.9°C3 December 1982 | −30.0°C29 December 1933 | 163 / 163 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 163 to 164 years each.
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Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.