MERRIWA (ROSCOMMON) climate by month
Averages and records for each calendar month at MERRIWA (ROSCOMMON), Australia, from 2007 to 2026. The warmest month is January, averaging 31.9°C; the coolest is June at 16.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 31.9°C | 16.8°C | 43.8°C18 January 2013 | 8.2°C29 January 2015 | 14 / 14 |
| February | 30.6°C | 15.9°C | 45.4°C11 February 2017 | 6.9°C21 February 2017 | 12 / 14 |
| March | 28.1°C | 14.2°C | 39.8°C19 March 2023 | 5.1°C29 March 2026 | 13 / 14 |
| April | 24.1°C | 9.4°C | 34.8°C10 April 2026 | −0.6°C13 April 2021 | 14 / 14 |
| May | 19.8°C | 6.1°C | 28.8°C1 May 2013 | −3.0°C25 May 2023 | 14 / 14 |
| June | 16.3°C | 3.6°C | 23.8°C3 June 2023 | −5.8°C22 June 2019 | 14 / 14 |
| July | 16.3°C | 2.5°C | 24.7°C5 July 2018 | −6.1°C20 July 2023 | 14 / 14 |
| August | 18.3°C | 3.2°C | 27.7°C30 August 2024 | −4.5°C15 August 2019 | 16 / 16 |
| September | 22.1°C | 5.0°C | 34.3°C23 September 2017 | −3.7°C2 September 2012 | 14 / 16 |
| October | 25.8°C | 8.6°C | 37.4°C26 October 2014 | −0.2°C15 October 2016 | 14 / 14 |
| November | 28.3°C | 11.9°C | 43.0°C23 November 2014 | 1.6°C12 November 2025 | 14 / 14 |
| December | 30.9°C | 14.6°C | 43.7°C21 December 2019 | 4.2°C9 December 2022 | 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 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.