Oroville Muni climate by month
Averages and records for each calendar month at Oroville Muni, United States, from 1998 to 2026. The warmest month is July, averaging 35.9°C; the coolest is December at 13.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 13.5°C | 4.4°C | 28.3°C15 January 2009 | −5.5°C13 January 2013 | 27 / 28 |
| February | 16.0°C | 5.4°C | 30.0°C9 February 2022 | −3.2°C20 February 2018 | 28 / 28 |
| March | 19.0°C | 7.3°C | 30.6°C22 March 2022 | −0.6°C8 March 2002 | 28 / 28 |
| April | 22.7°C | 9.1°C | 35.6°C21 April 2009 | 0.0°C12 April 2022 | 28 / 28 |
| May | 27.7°C | 12.9°C | 40.0°C28 May 2020 | 3.9°C11 May 2000 | 28 / 28 |
| June | 32.6°C | 16.6°C | 43.9°C18 June 2021 | 8.3°C3 June 1999 | 28 / 29 |
| July | 35.9°C | 18.6°C | 45.6°C6 July 2024 | 12.2°C4 July 1999 | 29 / 29 |
| August | 34.7°C | 17.8°C | 42.8°C28 August 2017 | 11.7°C21 August 2001 | 28 / 29 |
| September | 31.5°C | 15.4°C | 43.9°C5 September 2022 | 6.1°C29 September 2007 | 28 / 29 |
| October | 25.6°C | 11.0°C | 38.3°C2 October 2001 | 1.1°C31 October 2019 | 28 / 28 |
| November | 17.5°C | 6.7°C | 29.4°C1 November 2018 | −2.7°C29 November 2015 | 28 / 28 |
| December | 13.0°C | 4.3°C | 28.9°C5 December 2019 | −5.5°C9 December 2009 | 27 / 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.