Oshawa Arpt climate by month
Averages and records for each calendar month at Oshawa Arpt, Canada, from 2010 to 2024. The warmest month is July, averaging 26.9°C; the coolest is January at −0.9°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −0.9°C | −9.4°C | 12.3°C30 January 2013 | −26.7°C1 January 2018 | 14 / 14 |
| February | −0.3°C | −9.8°C | 18.3°C23 February 2017 | −27.8°C4 February 2023 | 14 / 14 |
| March | 4.7°C | −4.8°C | 23.3°C22 March 2012 | −25.2°C6 March 2015 | 14 / 14 |
| April | 11.1°C | 0.8°C | 27.2°C12 April 2023 | −10.0°C5 April 2016 | 14 / 14 |
| May | 18.9°C | 7.2°C | 31.0°C26 May 2020 | −3.8°C12 May 2020 | 12 / 13 |
| June | 23.8°C | 12.6°C | 32.3°C20 June 2012 | 2.1°C4 June 2019 | 14 / 14 |
| July | 26.9°C | 15.6°C | 37.1°C21 July 2011 | 7.5°C17 July 2014 | 14 / 14 |
| August | 25.7°C | 14.7°C | 33.6°C12 August 2016 | 7.1°C31 August 2017 | 13 / 14 |
| September | 21.8°C | 10.6°C | 31.7°C5 September 2018 | 0.2°C19 September 2020 | 13 / 14 |
| October | 14.7°C | 5.0°C | 28.2°C1 October 2019 | −7.3°C31 October 2020 | 13 / 14 |
| November | 7.5°C | −1.6°C | 23.0°C5 November 2022 | −17.0°C13 November 2019 | 13 / 14 |
| December | 2.1°C | −5.0°C | 15.0°C11 December 2021 | −27.1°C28 December 2017 | 14 / 14 |
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 12 to 14 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.