Jasper/Warden climate by month
Averages and records for each calendar month at Jasper/Warden, Canada, from 1994 to 2026. The warmest month is July, averaging 23.8°C; the coolest is December at −3.6°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −2.7°C | −14.2°C | 13.1°C29 January 2024 | −44.8°C25 January 1997 | 32 / 32 |
| February | 0.5°C | −12.7°C | 12.9°C26 February 2016 | −39.8°C10 February 2019 | 29 / 32 |
| March | 4.5°C | −8.4°C | 20.8°C29 March 2004 | −36.5°C8 March 2002 | 32 / 33 |
| April | 10.9°C | −3.9°C | 26.7°C30 April 2023 | −20.1°C2 April 2020 | 32 / 33 |
| May | 16.8°C | 0.7°C | 30.8°C15 May 2023 | −15.8°C11 May 2014 | 32 / 32 |
| June | 20.3°C | 5.0°C | 41.2°C30 June 2021 | −3.8°C1 June 2000 | 32 / 32 |
| July | 23.8°C | 7.4°C | 39.4°C1 July 2021 | −3.4°C1 July 2010 | 30 / 32 |
| August | 23.5°C | 6.1°C | 34.4°C28 August 1996 | −2.6°C18 August 2005 | 31 / 32 |
| September | 18.2°C | 2.4°C | 33.7°C3 September 2022 | −9.8°C22 September 2000 | 30 / 32 |
| October | 10.3°C | −2.4°C | 26.7°C3 October 2003 | −22.1°C25 October 2020 | 31 / 31 |
| November | 1.7°C | −8.2°C | 19.9°C8 November 2016 | −38.3°C29 November 2014 | 31 / 31 |
| December | −3.6°C | −14.4°C | 10.1°C1 December 2008 | −43.2°C20 December 2022 | 31 / 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.