THETFORD MINES RCS, QUE climate by month
Averages and records for each calendar month at THETFORD MINES RCS, QUE, Canada, from 2006 to 2026. The warmest month is July, averaging 23.6°C; the coolest is January at −6.5°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −6.5°C | −15.9°C | 11.0°C12 January 2018 | −35.0°C2 January 2014 | 20 / 20 |
| February | −5.2°C | −15.7°C | 14.3°C25 February 2017 | −33.3°C4 February 2023 | 20 / 20 |
| March | 0.6°C | −9.8°C | 22.2°C21 March 2012 | −28.7°C7 March 2007 | 20 / 20 |
| April | 8.2°C | −2.2°C | 27.5°C27 April 2009 | −16.7°C5 April 2015 | 20 / 20 |
| May | 16.6°C | 4.4°C | 32.1°C27 May 2020 | −5.3°C7 May 2022 | 19 / 19 |
| June | 21.0°C | 9.7°C | 32.5°C23 June 2020 | −1.2°C1 June 2020 | 19 / 19 |
| July | 23.6°C | 12.7°C | 32.2°C10 July 2020 | 3.8°C16 July 2015 | 19 / 19 |
| August | 22.4°C | 11.6°C | 31.5°C12 August 2025 | 2.4°C20 August 2007 | 19 / 19 |
| September | 18.6°C | 7.5°C | 29.6°C5 September 2023 | −3.7°C20 September 2020 | 18 / 20 |
| October | 11.3°C | 2.0°C | 26.6°C4 October 2023 | −9.8°C31 October 2020 | 19 / 19 |
| November | 3.3°C | −4.7°C | 21.0°C5 November 2022 | −22.2°C30 November 2012 | 19 / 19 |
| December | −3.2°C | −11.4°C | 14.9°C1 December 2020 | −30.2°C14 December 2013 | 19 / 19 |
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 18 to 20 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.