Oceanside Muni climate by month
Averages and records for each calendar month at Oceanside Muni, United States, from 1999 to 2026. The warmest month is August, averaging 25.9°C; the coolest is February at 19.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 19.5°C | 4.7°C | 33.3°C15 January 2021 | −3.8°C15 January 2007 | 27 / 27 |
| February | 19.0°C | 5.6°C | 32.8°C22 February 2002 | −2.1°C3 February 2011 | 27 / 27 |
| March | 19.4°C | 7.8°C | 33.3°C13 March 2015 | −1.6°C2 March 2021 | 27 / 27 |
| April | 20.5°C | 9.3°C | 33.3°C12 April 2008 | 2.8°C1 April 2000 | 26 / 27 |
| May | 21.4°C | 12.5°C | 31.7°C8 May 2007 | 3.3°C1 May 2011 | 26 / 28 |
| June | 22.7°C | 14.8°C | 31.7°C30 June 2015 | 7.2°C1 June 2011 | 28 / 28 |
| July | 25.1°C | 17.0°C | 34.4°C22 July 2006 | 10.6°C12 July 2001 | 27 / 28 |
| August | 25.9°C | 17.0°C | 33.9°C30 August 2013 | 10.0°C26 August 2009 | 28 / 28 |
| September | 25.7°C | 15.3°C | 40.6°C27 September 2010 | 7.2°C28 September 2005 | 27 / 28 |
| October | 24.2°C | 11.4°C | 41.1°C24 October 2017 | 1.1°C29 October 2009 | 27 / 27 |
| November | 21.9°C | 7.0°C | 36.7°C9 November 2016 | −2.1°C27 November 2010 | 27 / 27 |
| December | 19.1°C | 4.5°C | 30.6°C10 December 2017 | −3.8°C23 December 2011 | 27 / 27 |
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 26 to 28 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.