Stockton Metro climate by month
Averages and records for each calendar month at Stockton Metro, United States, from 1948 to 2026. The warmest month is July, averaging 34.7°C; the coolest is January at 12.6°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 12.6°C | 3.3°C | 25.6°C18 January 2021 | −8.9°C11 January 1949 | 78 / 78 |
| February | 16.2°C | 4.7°C | 26.1°C26 February 2020 | −5.6°C6 February 1989 | 78 / 78 |
| March | 19.2°C | 6.0°C | 32.2°C19 March 2026 | −2.8°C2 March 1971 | 78 / 78 |
| April | 22.9°C | 7.9°C | 37.8°C30 April 1981 | 0.0°C24 April 1964 | 78 / 78 |
| May | 27.4°C | 11.0°C | 41.7°C28 May 1984 | 2.2°C11 May 2010 | 78 / 78 |
| June | 31.7°C | 13.9°C | 43.9°C2 June 1960 | 7.2°C7 June 1950 | 78 / 78 |
| July | 34.7°C | 15.8°C | 46.1°C23 July 2006 | 9.4°C6 July 1951 | 78 / 78 |
| August | 33.9°C | 15.6°C | 45.0°C16 August 2020 | 8.3°C26 August 1955 | 77 / 78 |
| September | 31.5°C | 14.0°C | 46.1°C6 September 2022 | 5.6°C30 September 1950 | 77 / 78 |
| October | 26.0°C | 10.2°C | 40.6°C2 October 2024 | 0.6°C31 October 1972 | 78 / 78 |
| November | 18.3°C | 5.7°C | 29.4°C1 November 1949 | −3.9°C19 November 1985 | 78 / 78 |
| December | 12.6°C | 3.2°C | 24.4°C7 December 2020 | −8.3°C22 December 1990 | 78 / 78 |
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 77 to 78 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.