STEPHENVILLE RCS, NFLD climate by month
Averages and records for each calendar month at STEPHENVILLE RCS, NFLD, Canada, from 2008 to 2024. The warmest month is August, averaging 21.3°C; the coolest is February at −2.1°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −1.4°C | −8.0°C | 12.1°C17 January 2023 | −22.8°C30 January 2024 | 16 / 16 |
| February | −2.1°C | −9.1°C | 11.3°C25 February 2016 | −25.3°C9 February 2015 | 16 / 16 |
| March | 0.5°C | −7.1°C | 12.5°C29 March 2024 | −21.5°C2 March 2012 | 16 / 16 |
| April | 6.0°C | −1.9°C | 17.6°C28 April 2018 | −18.3°C9 April 2019 | 16 / 16 |
| May | 11.5°C | 1.9°C | 24.5°C17 May 2014 | −4.5°C1 May 2009 | 15 / 15 |
| June | 17.0°C | 7.1°C | 29.0°C25 June 2020 | −1.2°C2 June 2016 | 15 / 15 |
| July | 20.7°C | 11.7°C | 28.7°C6 July 2012 | 1.3°C8 July 2009 | 15 / 15 |
| August | 21.3°C | 12.5°C | 29.4°C13 August 2021 | 3.6°C25 August 2019 | 15 / 15 |
| September | 17.0°C | 8.6°C | 29.0°C5 September 2023 | −1.2°C27 September 2010 | 15 / 15 |
| October | 11.5°C | 3.8°C | 24.5°C7 October 2023 | −5.0°C30 October 2009 | 15 / 15 |
| November | 5.9°C | −0.3°C | 17.5°C20 November 2016 | −11.7°C25 November 2018 | 15 / 15 |
| December | 1.4°C | −4.2°C | 15.0°C2 December 2020 | −16.8°C30 December 2015 | 15 / 16 |
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 15 to 16 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.