Sinton Threshold Days by Year (USC00418354)

15 fixed thresholds counted per year at Sinton (USC00418354): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sinton Thresholds

Sinton: days with 10 mm (0.39 in) or more of precipitation in 74 years, most in 1958 with 35.
Sinton: days with 25 mm (0.98 in) or more of precipitation in 74 years, most in 1981 with 19.
Sinton: days with 50 mm (1.97 in) or more of precipitation in 72 years, most in 1997 with 9.
Sinton: days with a maximum temperature at or above 30 C (86 F) in 42 years, most in 1963 with 199.
15 fixed thresholds have at least one qualifying day at Sinton.

Days at or above 30 C (86 F)

42 years with a qualifying day

Days per year at Sinton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 199 in 1963.

Days at or above 30 C (86 F) per year at Sinton
Year	Days	Decade average
1958	172	176
1959	180	176
1961	159	162.9
1963	199	162.9
1965	163	162.9
1966	156	162.9
1967	169	162.9
1968	142	162.9
1969	152	162.9
1970	144	162.2
1971	170	162.2
1972	184	162.2
1973	162	162.2
1974	170	162.2
1975	180	162.2
1977	146	162.2
1978	162	162.2
1979	142	162.2
1980	161	162.8
1981	159	162.8
1982	153	162.8
1983	154	162.8
1984	187	162.8
1990	152	145
1991	142	145
1992	128	145
1993	138	145
1994	138	145
1995	146	145
1996	160	145
1997	143	145
1998	150	145
1999	153	145
2000	175	169.3
2004	153	169.3
2008	174	169.3
2009	175	169.3
2010	161	161.6
2011	180	161.6
2012	180	161.6
2013	156	161.6
2014	131	161.6

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

First to last qualifying date each year at Sinton
Year	First date	Last date
1958	1958-02-26	1958-11-17
1959	1959-02-17	1959-11-04
1961	1961-03-29	1961-11-01
1963	1963-02-02	1963-11-07
1965	1965-01-25	1965-11-26
1966	1966-03-03	1966-12-08
1967	1967-03-15	1967-11-26
1968	1968-04-03	1968-11-15
1969	1969-01-22	1969-11-18
1970	1970-03-25	1970-11-22
1971	1971-01-03	1971-11-02
1972	1972-01-22	1972-11-06
1973	1973-03-06	1973-12-30
1974	1974-01-20	1974-11-19
1975	1975-01-26	1975-11-07
1977	1977-03-20	1977-12-16
1978	1978-03-01	1978-12-21
1979	1979-04-25	1979-10-30
1980	1980-02-21	1980-10-28
1981	1981-02-19	1981-11-26
1982	1982-02-17	1982-11-21
1983	1983-03-10	1983-12-11
1984	1984-03-14	1984-11-02
1990	1990-02-10	1990-11-28
1991	1991-03-02	1991-10-30
1992	1992-03-07	1992-11-04
1993	1993-04-15	1993-12-13
1994	1994-05-18	1994-11-28
1995	1995-03-23	1995-11-11
1996	1996-02-20	1996-11-22
1997	1997-01-05	1997-11-06
1998	1998-04-08	1998-10-18
1999	1999-03-03	1999-10-18
2000	2000-01-20	2000-11-03
2004	2004-03-30	2004-12-23
2008	2008-02-05	2008-12-27
2009	2009-02-27	2009-10-29
2010	2010-04-23	2010-11-01
2011	2011-04-01	2011-11-16
2012	2012-03-25	2012-11-07
2013	2013-01-29	2013-11-01
2014	2014-02-14	2014-10-29

Every Fixed Threshold

Fixed thresholds at Sinton
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	42	199	1963	131
35 C (95 F): Days	42	87	1963	42
40 C (104 F): Days	13	4	1969	1
90 F (32.2 C): Days	42	149	1963	109
100 F (37.8 C): Days	34	18	1969	3
0 C (32 F): Ice days (max	6	2	1983	1
0 C (32 F): Frost days (min	37	22	1978	11
20 C (68 F): Tropical nights (min	37	183	2000	144
25 C (77 F): Days with min	37	77	1998	49
10 mm (0.39 in): Days with 10 mm or more rain	74	35	1958	29
25 mm (0.98 in): Days with 25 mm or more rain	74	19	1981	14
50 mm (1.97 in): Days with 50 mm or more rain	72	9	1997	2
100 mm (3.94 in): Days with 100 mm or more rain	42	2	1967	1
200 mm (7.87 in): Days with 200 mm or more rain	6	1	1930	1
10 cm (3.9 in): Days with 10 cm or more snowfall	2	1	1926	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.

Download the Data

Data for Sinton 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).

Sinton Threshold Days by Year (USC00418354)

Key Facts for Sinton Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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