Portage la Prairie/Southport Arpt climate by month
Averages and records for each calendar month at Portage la Prairie/Southport Arpt, Canada, from 1992 to 2024. The warmest month is July, averaging 25.5°C; the coolest is January at −10.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −10.0°C | −19.0°C | 10.3°C5 January 2012 | −38.1°C19 January 1996 | 30 / 32 |
| February | −8.0°C | −17.8°C | 8.7°C17 February 2017 | −39.8°C1 February 1996 | 30 / 32 |
| March | −0.7°C | −10.4°C | 24.6°C19 March 2012 | −34.0°C2 March 2003 | 31 / 32 |
| April | 9.5°C | −2.1°C | 27.2°C29 April 2001 | −19.9°C9 April 1997 | 30 / 32 |
| May | 17.4°C | 5.1°C | 34.2°C5 May 2016 | −6.9°C7 May 2019 | 30 / 31 |
| June | 22.8°C | 11.5°C | 35.7°C19 June 2022 | −1.8°C6 June 2009 | 28 / 31 |
| July | 25.5°C | 14.3°C | 35.8°C29 July 2007 | 4.9°C6 July 1997 | 30 / 31 |
| August | 24.7°C | 12.7°C | 37.7°C12 August 2018 | 3.7°C20 August 2004 | 30 / 31 |
| September | 19.7°C | 8.0°C | 35.8°C2 September 2023 | −5.8°C28 September 2002 | 28 / 31 |
| October | 10.7°C | 1.0°C | 32.8°C5 October 2011 | −13.9°C20 October 2020 | 29 / 31 |
| November | 0.8°C | −7.7°C | 20.9°C5 November 2016 | −27.8°C17 November 2005 | 30 / 31 |
| December | −7.2°C | −15.6°C | 11.2°C14 December 1998 | −34.6°C12 December 1995 | 30 / 32 |
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 28 to 31 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.