ROLLESTON AIRPORT climate by month
Averages and records for each calendar month at ROLLESTON AIRPORT, Australia, from 1987 to 2010. The warmest month is January, averaging 34.7°C; the coolest is July at 22.9°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 34.7°C | 21.0°C | 44.5°C6 January 1994 | 12.8°C2 January 1990 | 19 / 23 |
| February | 33.3°C | 20.8°C | 41.7°C2 February 2005 | 13.5°C14 February 1995 | 13 / 23 |
| March | 32.7°C | 18.4°C | 41.2°C15 March 1998 | 9.5°C31 March 1993 | 19 / 23 |
| April | 29.5°C | 15.0°C | 37.0°C6 April 1996 | 2.9°C29 April 1999 | 19 / 23 |
| May | 25.9°C | 10.6°C | 33.9°C23 May 2003 | −1.0°C25 May 2006 | 15 / 23 |
| June | 23.0°C | 7.1°C | 31.4°C1 June 1999 | −1.5°C26 June 1992 | 20 / 22 |
| July | 22.9°C | 5.5°C | 29.2°C4 July 1994 | −3.0°C29 July 1994 | 17 / 22 |
| August | 24.7°C | 6.7°C | 35.4°C23 August 2009 | −3.0°C1 August 1994 | 21 / 23 |
| September | 28.7°C | 10.2°C | 38.8°C30 September 1988 | 0.5°C8 September 1995 | 17 / 23 |
| October | 31.6°C | 14.9°C | 41.6°C31 October 2003 | 4.5°C1 October 1992 | 17 / 23 |
| November | 32.9°C | 17.7°C | 43.3°C18 November 1990 | 7.2°C17 November 2006 | 18 / 23 |
| December | 34.2°C | 19.8°C | 44.0°C3 December 1996 | 11.0°C29 December 1993 | 18 / 23 |
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 13 to 21 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.