Corona Muni climate by month
Averages and records for each calendar month at Corona Muni, United States, from 2011 to 2026. The warmest month is August, averaging 33.5°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 | 32.2°C15 January 2021 | −6.6°C1 January 2015 | 11 / 14 |
| February | 21.4°C | 5.0°C | 34.4°C27 February 2026 | −4.9°C26 February 2013 | 13 / 13 |
| March | 23.2°C | 6.6°C | 38.9°C17 March 2026 | −1.0°C2 March 2023 | 12 / 14 |
| April | 24.9°C | 7.9°C | 37.8°C8 April 2022 | −1.0°C19 April 2013 | 13 / 14 |
| May | 25.5°C | 10.7°C | 40.0°C15 May 2014 | 2.8°C8 May 2017 | 14 / 14 |
| June | 29.4°C | 13.5°C | 42.8°C19 June 2016 | 6.1°C13 June 2017 | 14 / 14 |
| July | 32.7°C | 16.2°C | 45.6°C6 July 2018 | 8.3°C17 July 2013 | 12 / 14 |
| August | 33.5°C | 16.0°C | 43.3°C31 August 2017 | 8.9°C1 August 2013 | 14 / 14 |
| September | 32.2°C | 14.3°C | 45.0°C6 September 2020 | 3.9°C28 September 2013 | 13 / 15 |
| October | 28.7°C | 9.8°C | 40.6°C1 October 2012 | 0.6°C31 October 2013 | 12 / 14 |
| November | 24.6°C | 5.6°C | 36.1°C5 November 2012 | −2.7°C11 November 2012 | 14 / 14 |
| December | 20.4°C | 3.5°C | 32.2°C10 December 2025 | −6.0°C7 December 2011 | 12 / 15 |
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 11 to 14 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.