Rockglen climate by month
Averages and records for each calendar month at Rockglen , Canada, from 1970 to 2026. The warmest month is July, averaging 26.1°C; the coolest is January at −6.7°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −6.7°C | −16.1°C | 16.3°C31 January 2024 | −39.0°C13 January 2024 | 39 / 43 |
| February | −5.0°C | −14.4°C | 12.4°C27 February 2016 | −39.1°C1 February 1996 | 38 / 43 |
| March | 1.4°C | −8.7°C | 22.2°C31 March 2015 | −35.9°C1 March 2014 | 38 / 43 |
| April | 9.9°C | −2.1°C | 28.9°C28 April 2001 | −25.6°C1 April 1975 | 40 / 43 |
| May | 16.9°C | 4.2°C | 33.5°C26 May 2026 | −8.3°C2 May 1976 | 38 / 42 |
| June | 21.5°C | 9.1°C | 34.1°C25 June 2009 | −1.1°C2 June 1998 | 36 / 42 |
| July | 26.1°C | 12.3°C | 38.6°C17 July 2022 | 3.3°C8 July 1971 | 33 / 40 |
| August | 25.6°C | 11.5°C | 39.3°C11 August 2018 | 2.2°C16 August 1975 | 35 / 40 |
| September | 19.7°C | 6.3°C | 36.4°C7 September 2022 | −6.7°C21 September 1972 | 32 / 39 |
| October | 11.0°C | −0.5°C | 29.4°C2 October 1997 | −18.9°C25 October 2020 | 34 / 39 |
| November | 1.8°C | −7.9°C | 22.6°C7 November 1999 | −29.4°C18 November 1978 | 36 / 39 |
| December | −5.2°C | −14.3°C | 11.6°C1 December 2021 | −36.7°C9 December 1977 | 37 / 42 |
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 32 to 40 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.