Toronto/Pearson Intl climate by month
Averages and records for each calendar month at Toronto/Pearson Intl, Canada, from 1937 to 2013. The warmest month is July, averaging 27.1°C; the coolest is January at −1.9°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −1.9°C | −10.2°C | 17.6°C13 January 2005 | −31.3°C4 January 1981 | 76 / 76 |
| February | −1.0°C | −9.7°C | 14.9°C23 February 1984 | −31.1°C15 February 1943 | 76 / 76 |
| March | 4.0°C | −4.9°C | 26.0°C22 March 2012 | −28.9°C4 March 1950 | 76 / 76 |
| April | 11.8°C | 1.2°C | 31.1°C25 April 1990 | −17.2°C7 April 1972 | 75 / 76 |
| May | 18.6°C | 6.8°C | 34.4°C16 May 1962 | −5.6°C7 May 1966 | 76 / 76 |
| June | 24.1°C | 12.2°C | 36.7°C25 June 1952 | 0.6°C8 June 1949 | 75 / 76 |
| July | 27.1°C | 15.0°C | 37.9°C21 July 2011 | 3.9°C30 July 1968 | 75 / 75 |
| August | 26.1°C | 14.4°C | 38.3°C25 August 1948 | 1.1°C30 August 1965 | 75 / 75 |
| September | 21.5°C | 10.2°C | 36.7°C2 September 1953 | −3.9°C27 September 1965 | 73 / 74 |
| October | 14.6°C | 4.4°C | 31.6°C8 October 2007 | −8.3°C23 October 1969 | 73 / 74 |
| November | 7.4°C | −0.4°C | 25.0°C1 November 1950 | −18.3°C26 November 1949 | 74 / 75 |
| December | 0.9°C | −6.6°C | 20.0°C3 December 1982 | −31.1°C20 December 1942 | 75 / 75 |
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 73 to 76 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.