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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

San Joaquin Threshold Days by Year

12 fixed thresholds counted per year at San Joaquin (MXN00007147): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Joaquin Thresholds

  • San Joaquin: days with a maximum temperature at or above 30 C (86 F) in 27 years, most in 1985 with 272.
  • San Joaquin: days with a maximum temperature at or above 35 C (95 F) in 27 years, most in 1973 with 90.
  • San Joaquin: days with a maximum temperature at or above 90 F (32.2 C) in 27 years, most in 1973 with 189.
  • San Joaquin: nights with a minimum temperature at or above 20 C (68 F) in 27 years, most in 1982 with 275.
  • 12 fixed thresholds have at least one qualifying day at San Joaquin.
27 years with a qualifying day
Days at or above 30 C (86 F) per year at San Joaquin Days per year at San Joaquin with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 272 in 1985. 01002003001963: 2311964: 2291965: 2211966: 2011967: 2081968: 1931969: 1771970: 1801972: 2511973: 2631974: 2531975: 2591976: 2331977: 2261978: 2321979: 2091980: 2231981: 2371982: 2421983: 2471984: 2181985: 2721986: 2561987: 2031988: 2231989: 2461990: 254196319661969197319761979198219851988
Days per year at San Joaquin with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 272 in 1985.
Days at or above 30 C (86 F) per year at San Joaquin
YearDaysDecade average
1963231208.6
1964229208.6
1965221208.6
1966201208.6
1967208208.6
1968193208.6
1969177208.6
1970180234
1972251234
1973263234
1974253234
1975259234
1976233234
1977226234
1978232234
1979209234
1980223236.7
1981237236.7
1982242236.7
1983247236.7
1984218236.7
1985272236.7
1986256236.7
1987203236.7
1988223236.7
1989246236.7
1990254254
First to last qualifying date each year at San Joaquin For each year, a bar from the first to the last day at San Joaquin meeting 30 C (86 F). 1963: 10 January 1963 to 14 December 19631964: 8 January 1964 to 26 December 19641965: 23 January 1965 to 18 December 19651966: 9 February 1966 to 28 December 19661967: 2 January 1967 to 18 December 19671968: 23 February 1968 to 22 December 19681969: 9 January 1969 to 30 December 19691970: 2 February 1970 to 28 October 19701972: 2 January 1972 to 31 December 19721973: 3 January 1973 to 31 December 19731974: 1 January 1974 to 29 December 19741975: 7 January 1975 to 29 December 19751976: 25 January 1976 to 31 December 19761977: 5 January 1977 to 20 December 19771978: 25 January 1978 to 31 December 19781979: 1 January 1979 to 12 December 19791980: 11 January 1980 to 17 November 19801981: 1 February 1981 to 31 December 19811982: 2 January 1982 to 29 December 19821983: 21 January 1983 to 28 December 19831984: 18 January 1984 to 14 December 19841985: 1 January 1985 to 31 December 19851986: 7 January 1986 to 22 December 19861987: 15 January 1987 to 25 December 19871988: 17 January 1988 to 31 December 19881989: 3 January 1989 to 31 December 19891990: 6 January 1990 to 30 December 19901963196719721976198019841988JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Joaquin meeting 30 C (86 F).
First to last qualifying date each year at San Joaquin
YearFirst dateLast date
19631963-01-101963-12-14
19641964-01-081964-12-26
19651965-01-231965-12-18
19661966-02-091966-12-28
19671967-01-021967-12-18
19681968-02-231968-12-22
19691969-01-091969-12-30
19701970-02-021970-10-28
19721972-01-021972-12-31
19731973-01-031973-12-31
19741974-01-011974-12-29
19751975-01-071975-12-29
19761976-01-251976-12-31
19771977-01-051977-12-20
19781978-01-251978-12-31
19791979-01-011979-12-12
19801980-01-111980-11-17
19811981-02-011981-12-31
19821982-01-021982-12-29
19831983-01-211983-12-28
19841984-01-181984-12-14
19851985-01-011985-12-31
19861986-01-071986-12-22
19871987-01-151987-12-25
19881988-01-171988-12-31
19891989-01-031989-12-31
19901990-01-061990-12-30

Every Fixed Threshold

Fixed thresholds at San Joaquin
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days272721985254
35 C (95 F): Days2790197320
40 C (104 F): Days5219731
90 F (32.2 C): Days271891973132
100 F (37.8 C): Days141119731
20 C (68 F): Tropical nights (min272751982254
25 C (77 F): Days with min20819821
10 mm (0.39 in): Days with 10 mm or more rain27108197886
25 mm (0.98 in): Days with 25 mm or more rain2759198151
50 mm (1.97 in): Days with 50 mm or more rain2727196424
100 mm (3.94 in): Days with 100 mm or more rain26819673
200 mm (7.87 in): Days with 200 mm or more rain10219641

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1963.

Download the Data

  • Data for San Joaquin threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).