Sulphur Threshold Days by Year (USC00267873)

16 fixed thresholds counted per year at Sulphur (USC00267873): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sulphur Thresholds

Sulphur: nights with a minimum temperature at or below 0 C (32 F) in 29 years, most in 1951 with 206.
Sulphur: nights with a minimum temperature at or below -10 C (14 F) in 29 years, most in 1919 with 82.
Sulphur: days with a maximum temperature at or above 30 C (86 F) in 28 years, most in 1919 with 116.
Sulphur: days with a maximum temperature at or above 35 C (95 F) in 28 years, most in 1919 with 70.
16 fixed thresholds have at least one qualifying day at Sulphur.

Days at or above 30 C (86 F)

28 years with a qualifying day

Days per year at Sulphur with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 116 in 1919.

Days at or above 30 C (86 F) per year at Sulphur
Year	Days	Decade average
1916	64	91.3
1917	99	91.3
1918	86	91.3
1919	116	91.3
1920	64	73.4
1921	75	73.4
1922	69	73.4
1923	66	73.4
1924	67	73.4
1927	83	73.4
1929	90	73.4
1930	81	87.6
1931	88	87.6
1932	101	87.6
1933	80	87.6
1934	79	87.6
1935	84	87.6
1936	100	87.6
1937	88	87.6
1938	86	87.6
1939	89	87.6
1940	101	81.8
1941	62	81.8
1942	83	81.8
1943	78	81.8
1945	85	81.8
1951	93	85
1952	77	85

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

First to last qualifying date each year at Sulphur
Year	First date	Last date
1916	1916-06-08	1916-09-18
1917	1917-06-08	1917-10-11
1918	1918-06-03	1918-09-21
1919	1919-05-19	1919-09-28
1920	1920-06-05	1920-09-20
1921	1921-05-26	1921-10-09
1922	1922-06-11	1922-09-21
1923	1923-06-09	1923-09-12
1924	1924-05-15	1924-09-09
1927	1927-04-25	1927-09-21
1929	1929-05-19	1929-10-05
1930	1930-06-05	1930-10-04
1931	1931-05-12	1931-09-14
1932	1932-05-11	1932-09-24
1933	1933-05-29	1933-10-06
1934	1934-04-19	1934-10-11
1935	1935-05-22	1935-09-22
1936	1936-04-15	1936-10-10
1937	1937-05-13	1937-09-19
1938	1938-05-14	1938-09-23
1939	1939-05-08	1939-09-24
1940	1940-05-09	1940-09-12
1941	1941-05-10	1941-09-16
1942	1942-05-19	1942-10-25
1943	1943-05-23	1943-10-01
1945	1945-06-18	1945-10-08
1951	1951-05-22	1951-09-26
1952	1952-04-23	1952-09-20

Every Fixed Threshold

Fixed thresholds at Sulphur
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	28	116	1919	77
35 C (95 F): Days	28	70	1919	29
40 C (104 F): Days	13	9	1919	1
90 F (32.2 C): Days	28	97	1919	57
100 F (37.8 C): Days	27	41	1919	9
110 F (43.3 C): Days	1	1	1931	1
0 C (32 F): Ice days (max	26	49	1922	4
0 C (32 F): Frost days (min	29	206	1951	199
-10 C (14 F): Days with min	29	82	1919	57
-20 C (-4 F): Days with min	15	23	1917	2
-30 C (-22 F): Days with min	5	6	1917	6
20 C (68 F): Tropical nights (min	20	16	1917	8
25 C (77 F): Days with min	2	7	1917	1
10 mm (0.39 in): Days with 10 mm or more rain	21	7	1937	4
25 mm (0.98 in): Days with 25 mm or more rain	6	1	1916	1
10 cm (3.9 in): Days with 10 cm or more snowfall	6	5	1916	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1916.

Download the Data

Data for Sulphur 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).

Sulphur Threshold Days by Year (USC00267873)

Key Facts for Sulphur Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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