San Francisco Yosocuta Threshold Days by Year (MXN00020108)

12 fixed thresholds counted per year at San Francisco Yosocuta (MXN00020108): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Francisco Yosocuta Thresholds

San Francisco Yosocuta: days with a maximum temperature at or above 30 C (86 F) in 25 years, most in 1994 with 341.
San Francisco Yosocuta: days with a maximum temperature at or above 90 F (32.2 C) in 25 years, most in 1994 with 314.
San Francisco Yosocuta: days with 10 mm (0.39 in) or more of precipitation in 24 years, most in 1972 with 34.
San Francisco Yosocuta: days with 25 mm (0.98 in) or more of precipitation in 24 years, most in 1992 with 9.
12 fixed thresholds have at least one qualifying day at San Francisco Yosocuta.

Days at or above 30 C (86 F)

25 years with a qualifying day

Days per year at San Francisco Yosocuta with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 341 in 1994.

Days at or above 30 C (86 F) per year at San Francisco Yosocuta
Year	Days	Decade average
1971	88	124
1972	125	124
1974	101	124
1975	126	124
1976	213	124
1977	95	124
1978	106	124
1979	138	124
1980	124	118.1
1981	79	118.1
1982	144	118.1
1983	123	118.1
1984	94	118.1
1985	65	118.1
1988	159	118.1
1989	157	118.1
1991	205	200.5
1992	214	200.5
1993	284	200.5
1994	341	200.5
1995	169	200.5
1996	120	200.5
1997	114	200.5
1998	157	200.5
2000	22	22

For each year, a bar from the first to the last day at San Francisco Yosocuta meeting 30 C (86 F).

First to last qualifying date each year at San Francisco Yosocuta
Year	First date	Last date
1971	1971-01-25	1971-12-30
1972	1972-01-23	1972-11-30
1974	1974-02-12	1974-11-19
1975	1975-01-28	1975-12-15
1976	1976-01-03	1976-12-12
1977	1977-01-04	1977-12-31
1978	1978-01-01	1978-12-30
1979	1979-01-26	1979-12-13
1980	1980-01-11	1980-12-06
1981	1981-02-10	1981-12-29
1982	1982-01-16	1982-12-31
1983	1983-01-30	1983-12-23
1984	1984-02-14	1984-12-05
1985	1985-01-27	1985-12-11
1988	1988-04-01	1988-10-31
1989	1989-01-03	1989-12-27
1991	1991-01-01	1991-08-31
1992	1992-03-04	1992-12-31
1993	1993-01-22	1993-12-31
1994	1994-01-01	1994-12-31
1995	1995-01-01	1995-09-17
1996	1996-01-08	1996-09-30
1997	1997-02-28	1997-10-31
1998	1998-02-20	1998-09-03
2000	2000-03-17	2000-11-26

Every Fixed Threshold

Fixed thresholds at San Francisco Yosocuta
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	25	341	1994	22
35 C (95 F): Days	23	286	1994	86
40 C (104 F): Days	5	40	1991	13
90 F (32.2 C): Days	25	314	1994	6
100 F (37.8 C): Days	10	93	1994	33
110 F (43.3 C): Days	2	2	1991	2
0 C (32 F): Frost days (min	6	20	1993	1
20 C (68 F): Tropical nights (min	9	77	1997	1
25 C (77 F): Days with min	1	1	1998	1
10 mm (0.39 in): Days with 10 mm or more rain	24	34	1972	16
25 mm (0.98 in): Days with 25 mm or more rain	24	9	1992	4
50 mm (1.97 in): Days with 50 mm or more rain	15	3	1976	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1971.

Download the Data

Data for San Francisco Yosocuta 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

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

San Francisco Yosocuta Threshold Days by Year (MXN00020108)

Key Facts for San Francisco Yosocuta Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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