Oklahoma City/Wiley Post Arpt climate by month
Averages and records for each calendar month at Oklahoma City/Wiley Post Arpt, United States, from 1996 to 2026. The warmest month is July, averaging 34.6°C; the coolest is January at 10.2°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 10.2°C | −2.3°C | 26.7°C17 January 2023 | −19.3°C7 January 2017 | 30 / 30 |
| February | 12.4°C | −0.3°C | 31.7°C11 February 2017 | −24.9°C16 February 2021 | 29 / 30 |
| March | 18.1°C | 5.2°C | 36.1°C21 March 2026 | −14.4°C3 March 2002 | 29 / 30 |
| April | 22.3°C | 9.7°C | 36.7°C17 April 2006 | −4.9°C7 April 2009 | 30 / 30 |
| May | 26.6°C | 15.1°C | 37.8°C30 May 2003 | 2.2°C2 May 2013 | 30 / 30 |
| June | 31.7°C | 20.5°C | 41.1°C18 June 2011 | 8.3°C6 June 1998 | 29 / 30 |
| July | 34.6°C | 22.9°C | 44.4°C20 July 2018 | 12.8°C28 July 2005 | 29 / 30 |
| August | 34.2°C | 22.2°C | 44.4°C1 August 2012 | 11.1°C20 August 2015 | 31 / 31 |
| September | 29.9°C | 17.7°C | 41.7°C3 September 1998 | 3.9°C26 September 2000 | 29 / 31 |
| October | 23.4°C | 10.8°C | 34.4°C3 October 2000 | −5.0°C9 October 2000 | 30 / 30 |
| November | 16.7°C | 4.3°C | 30.0°C7 November 2023 | −9.9°C12 November 2019 | 30 / 30 |
| December | 11.1°C | −0.7°C | 29.4°C27 December 2025 | −16.1°C8 December 2005 | 30 / 30 |
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 29 to 31 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.