San Antonio Threshold Days by Year (MXN00010062)

12 fixed thresholds counted per year at San Antonio (MXN00010062): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Antonio Thresholds

San Antonio: days with 10 mm (0.39 in) or more of precipitation in 24 years, most in 1978 with 23.
San Antonio: days with 25 mm (0.98 in) or more of precipitation in 23 years, most in 1970 with 9.
San Antonio: days with a maximum temperature at or above 30 C (86 F) in 21 years, most in 1965 with 220.
San Antonio: days with a maximum temperature at or above 35 C (95 F) in 21 years, most in 1965 with 73.
12 fixed thresholds have at least one qualifying day at San Antonio.

Days at or above 30 C (86 F)

21 years with a qualifying day

Days per year at San Antonio with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 220 in 1965.

Days at or above 30 C (86 F) per year at San Antonio
Year	Days	Decade average
1964	171	196.8
1965	220	196.8
1966	186	196.8
1967	198	196.8
1968	190	196.8
1969	216	196.8
1970	190	167.4
1971	164	167.4
1972	178	167.4
1974	159	167.4
1975	178	167.4
1976	129	167.4
1977	181	167.4
1978	147	167.4
1979	181	167.4
1980	159	148
1981	140	148
1982	181	148
1983	153	148
1984	107	148
2012	110	110

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

First to last qualifying date each year at San Antonio
Year	First date	Last date
1964	1964-02-11	1964-12-28
1965	1965-01-05	1965-12-30
1966	1966-03-11	1966-12-07
1967	1967-01-29	1967-12-12
1968	1968-02-20	1968-12-13
1969	1969-01-03	1969-12-26
1970	1970-01-28	1970-12-31
1971	1971-01-21	1971-11-30
1972	1972-01-26	1972-11-16
1974	1974-01-17	1974-11-15
1975	1975-01-26	1975-12-11
1976	1976-02-11	1976-10-26
1977	1977-03-10	1977-11-28
1978	1978-03-05	1978-12-01
1979	1979-03-13	1979-11-26
1980	1980-02-04	1980-10-27
1981	1981-03-19	1981-11-25
1982	1982-02-11	1982-10-31
1983	1983-03-24	1983-11-01
1984	1984-03-14	1984-11-16
2012	2012-02-29	2012-10-24

Every Fixed Threshold

Fixed thresholds at San Antonio
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	21	220	1965	110
35 C (95 F): Days	21	73	1965	12
40 C (104 F): Days	7	7	1969	3
90 F (32.2 C): Days	21	160	1965	48
100 F (37.8 C): Days	20	20	1965	1
0 C (32 F): Frost days (min	21	63	1977	62
-10 C (14 F): Days with min	2	2	1965	1
20 C (68 F): Tropical nights (min	21	20	1983	1
10 mm (0.39 in): Days with 10 mm or more rain	24	23	1978	4
25 mm (0.98 in): Days with 25 mm or more rain	23	9	1970	3
50 mm (1.97 in): Days with 50 mm or more rain	11	2	1978	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1978	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1964.

Download the Data

Data for San Antonio 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 Antonio Threshold Days by Year (MXN00010062)

Key Facts for San Antonio Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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