Rouyn climate by month
Averages and records for each calendar month at Rouyn, Canada, from 1994 to 2026. The warmest month is July, averaging 23.7°C; the coolest is January at −9.9°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −9.9°C | −19.7°C | 8.2°C14 January 1995 | −40.1°C2 January 2014 | 32 / 32 |
| February | −7.6°C | −18.7°C | 10.0°C23 February 2000 | −36.4°C13 February 2016 | 32 / 32 |
| March | −0.9°C | −12.3°C | 25.6°C21 March 2012 | −33.1°C3 March 2003 | 32 / 32 |
| April | 7.1°C | −3.7°C | 27.0°C3 April 2010 | −22.4°C4 April 2016 | 32 / 32 |
| May | 16.2°C | 4.2°C | 33.0°C25 May 2010 | −8.9°C5 May 2020 | 31 / 31 |
| June | 21.7°C | 10.2°C | 32.9°C24 June 2005 | −1.4°C7 June 2000 | 30 / 31 |
| July | 23.7°C | 12.9°C | 36.4°C12 July 2005 | 2.7°C1 July 2001 | 30 / 31 |
| August | 22.0°C | 11.7°C | 34.4°C6 August 2001 | 0.0°C3 August 1999 | 31 / 31 |
| September | 17.5°C | 7.5°C | 33.5°C8 September 2002 | −3.8°C28 September 2000 | 31 / 32 |
| October | 9.6°C | 1.7°C | 29.0°C5 October 2025 | −11.7°C30 October 2020 | 31 / 31 |
| November | 1.0°C | −5.8°C | 18.8°C9 November 2020 | −27.7°C27 November 1995 | 30 / 31 |
| December | −6.0°C | −14.1°C | 12.3°C6 December 2001 | −38.2°C20 December 2004 | 29 / 31 |
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 29 to 32 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.