Chino Arpt climate by month
Averages and records for each calendar month at Chino Arpt, United States, from 1998 to 2026. The warmest month is August, averaging 35.3°C; the coolest is December at 20.4°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 20.7°C | 4.6°C | 33.9°C15 January 2021 | −6.6°C14 January 2007 | 28 / 28 |
| February | 20.5°C | 5.2°C | 35.0°C16 February 2016 | −2.8°C1 February 2002 | 28 / 28 |
| March | 22.3°C | 6.8°C | 37.8°C19 March 2026 | −2.2°C3 March 2002 | 27 / 28 |
| April | 24.4°C | 8.4°C | 41.1°C26 April 2004 | −0.6°C2 April 1999 | 29 / 29 |
| May | 26.9°C | 11.6°C | 40.0°C15 May 2014 | 3.9°C1 May 2003 | 28 / 29 |
| June | 30.6°C | 14.0°C | 46.1°C20 June 2016 | 7.2°C5 June 1999 | 29 / 29 |
| July | 34.4°C | 16.5°C | 48.9°C6 July 2018 | 10.0°C17 July 2000 | 29 / 29 |
| August | 35.3°C | 16.6°C | 46.1°C31 August 2017 | 10.6°C8 August 1999 | 29 / 29 |
| September | 33.4°C | 15.0°C | 49.4°C6 September 2020 | 8.3°C20 September 1999 | 28 / 29 |
| October | 28.9°C | 11.2°C | 43.9°C1 October 2020 | 0.6°C29 October 2009 | 28 / 28 |
| November | 24.4°C | 6.7°C | 37.8°C3 November 2010 | −2.8°C13 November 2000 | 28 / 28 |
| December | 20.4°C | 4.2°C | 33.3°C1 December 2021 | −5.0°C24 December 1998 | 28 / 28 |
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 27 to 29 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.