MOOSONEE RCS, ONT climate by month
Averages and records for each calendar month at MOOSONEE RCS, ONT, Canada, from 2003 to 2025. The warmest month is July, averaging 23.0°C; the coolest is January at −12.4°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −12.4°C | −23.5°C | 6.5°C27 January 2006 | −40.4°C17 January 2005 | 19 / 22 |
| February | −11.0°C | −23.9°C | 7.4°C6 February 2005 | −41.3°C23 February 2023 | 19 / 22 |
| March | −3.3°C | −17.6°C | 24.5°C20 March 2012 | −38.3°C8 March 2007 | 19 / 22 |
| April | 4.2°C | −7.9°C | 25.3°C3 April 2010 | −28.8°C4 April 2023 | 17 / 22 |
| May | 12.6°C | 0.1°C | 34.2°C30 May 2018 | −14.5°C5 May 2020 | 18 / 22 |
| June | 19.6°C | 5.9°C | 35.7°C13 June 2007 | −4.4°C6 June 2007 | 17 / 22 |
| July | 23.0°C | 10.2°C | 36.8°C11 July 2005 | −1.2°C1 July 2006 | 19 / 22 |
| August | 21.5°C | 9.7°C | 33.1°C16 August 2021 | −0.6°C14 August 2025 | 19 / 22 |
| September | 17.1°C | 6.2°C | 32.4°C1 September 2008 | −4.7°C23 September 2018 | 19 / 21 |
| October | 9.8°C | 1.3°C | 28.1°C8 October 2011 | −14.7°C30 October 2020 | 18 / 21 |
| November | 0.4°C | −7.0°C | 20.5°C9 November 2020 | −26.8°C27 November 2014 | 19 / 22 |
| December | −8.9°C | −18.7°C | 10.8°C5 December 2015 | −39.8°C26 December 2004 | 18 / 22 |
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 17 to 19 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.