La Rioja Aero. climate by month
Averages and records for each calendar month at La Rioja Aero., Argentina, from 1956 to 2025. The warmest month is December, averaging 35.0°C; the coolest is June at 19.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 34.8°C | 21.1°C | 45.5°C4 January 1963 | 8.4°C14 January 1957 | 45 / 69 |
| February | 33.2°C | 20.0°C | 45.0°C11 February 2025 | 6.1°C18 February 2023 | 44 / 68 |
| March | 30.6°C | 18.2°C | 42.0°C16 March 2002 | 5.2°C31 March 1956 | 44 / 70 |
| April | 27.0°C | 14.2°C | 40.0°C6 April 1967 | 1.0°C11 April 1956 | 43 / 70 |
| May | 23.1°C | 9.4°C | 37.3°C1 May 1997 | −3.0°C31 May 2008 | 45 / 70 |
| June | 19.3°C | 5.1°C | 29.9°C15 June 1976 | −5.6°C16 June 1967 | 44 / 70 |
| July | 19.6°C | 4.1°C | 37.3°C11 July 1987 | −6.5°C8 July 1960 | 43 / 70 |
| August | 22.9°C | 6.4°C | 41.4°C24 August 1996 | −7.5°C21 August 2018 | 43 / 70 |
| September | 26.3°C | 10.6°C | 42.6°C5 September 2004 | −2.5°C1 September 1966 | 44 / 69 |
| October | 30.5°C | 15.4°C | 45.2°C31 October 2009 | 3.5°C1 October 1963 | 44 / 69 |
| November | 33.2°C | 18.4°C | 44.6°C22 November 2003 | 3.4°C1 November 2022 | 45 / 69 |
| December | 35.0°C | 20.6°C | 46.4°C28 December 1971 | 7.7°C21 December 1980 | 43 / 67 |
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 43 to 45 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.