Calgary Intl climate by month
Averages and records for each calendar month at Calgary Intl, Canada, from 1881 to 2012. The warmest month is July, averaging 23.7°C; the coolest is January at −3.8°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −3.8°C | −15.7°C | 17.6°C7 January 2003 | −44.4°C31 January 1893 | 128 / 129 |
| February | −1.6°C | −13.6°C | 22.6°C27 February 1992 | −45.0°C4 February 1893 | 128 / 129 |
| March | 2.8°C | −9.2°C | 25.4°C30 March 2004 | −37.2°C8 March 1951 | 129 / 129 |
| April | 10.8°C | −2.6°C | 29.4°C29 April 1926 | −30.0°C2 April 1954 | 127 / 129 |
| May | 16.5°C | 2.7°C | 32.4°C30 May 1986 | −16.7°C1 May 1954 | 127 / 128 |
| June | 20.1°C | 6.8°C | 35.0°C26 June 1926 | −3.3°C8 June 1891 | 128 / 129 |
| July | 23.7°C | 9.2°C | 36.1°C15 July 1919 | −0.6°C5 July 1884 | 128 / 129 |
| August | 22.8°C | 8.0°C | 35.6°C3 August 1914 | −3.2°C25 August 1992 | 128 / 128 |
| September | 17.7°C | 3.6°C | 33.3°C1 September 1967 | −13.3°C24 September 1926 | 128 / 128 |
| October | 12.2°C | −1.4°C | 29.4°C5 October 1889 | −25.7°C31 October 1984 | 128 / 129 |
| November | 3.4°C | −8.4°C | 22.8°C4 November 1975 | −35.0°C30 November 1893 | 129 / 129 |
| December | −1.3°C | −12.9°C | 19.5°C27 December 1999 | −42.8°C17 December 1924 | 128 / 129 |
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 127 to 129 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.