McArthur Threshold Days by Year

17 fixed thresholds counted per year at McArthur (USC00335021): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for McArthur Thresholds

McArthur: days with a maximum temperature at or above 30 C (86 F) in 31 years, most in 1936 with 99.
McArthur: days with a maximum temperature at or above 90 F (32.2 C) in 31 years, most in 1936 with 64.
McArthur: days with a maximum temperature at or below 0 C (32 F) in 31 years, most in 1895 with 30.
McArthur: days with a maximum temperature at or above 35 C (95 F) in 29 years, most in 1930 with 27.
17 fixed thresholds have at least one qualifying day at McArthur.

Days at or above 30 C (86 F)

31 years with a qualifying day

Days per year at McArthur with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 99 in 1936.

Days at or above 30 C (86 F) per year at McArthur
Year	Days	Decade average
1894	76	65.7
1895	74	65.7
1896	47	65.7
1897	58	65.7
1898	66	65.7
1899	73	65.7
1917	42	53
1918	64	53
1921	79	63.2
1922	75	63.2
1923	74	63.2
1924	47	63.2
1925	75	63.2
1926	59	63.2
1927	48	63.2
1928	58	63.2
1929	54	63.2
1930	87	77.9
1931	72	77.9
1932	81	77.9
1933	74	77.9
1934	86	77.9
1935	59	77.9
1936	99	77.9
1937	72	77.9
1938	67	77.9
1939	82	77.9
1940	59	71.5
1941	74	71.5
1942	75	71.5
1943	78	71.5

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

First to last qualifying date each year at McArthur
Year	First date	Last date
1894	1894-05-10	1894-09-30
1895	1895-05-03	1895-09-25
1896	1896-04-16	1896-09-14
1897	1897-06-11	1897-10-16
1898	1898-05-01	1898-10-02
1899	1899-04-29	1899-09-17
1917	1917-04-19	1917-09-15
1918	1918-05-05	1918-10-05
1921	1921-04-24	1921-09-20
1922	1922-05-09	1922-10-28
1923	1923-05-28	1923-10-13
1924	1924-05-06	1924-09-12
1925	1925-04-23	1925-09-20
1926	1926-05-01	1926-10-04
1927	1927-04-19	1927-10-28
1928	1928-05-03	1928-10-13
1929	1929-03-24	1929-09-29
1930	1930-04-11	1930-09-26
1931	1931-05-18	1931-10-07
1932	1932-05-05	1932-09-22
1933	1933-05-20	1933-09-26
1934	1934-05-04	1934-09-26
1935	1935-06-13	1935-10-14
1936	1936-05-02	1936-09-23
1937	1937-04-23	1937-10-06
1938	1938-04-27	1938-09-26
1939	1939-05-06	1939-10-10
1940	1940-05-06	1940-09-22
1941	1941-04-13	1941-10-07
1942	1942-04-26	1942-09-19
1943	1943-05-06	1943-09-30

Every Fixed Threshold

Fixed thresholds at McArthur
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	31	99	1936	78
35 C (95 F): Days	29	27	1930	4
40 C (104 F): Days	3	4	1934	4
90 F (32.2 C): Days	31	64	1936	42
100 F (37.8 C): Days	9	10	1930	6
0 C (32 F): Ice days (max	31	30	1895	16
0 C (32 F): Frost days (min	29	156	1895	131
-10 C (14 F): Days with min	29	40	1895	28
-20 C (-4 F): Days with min	25	15	1917	3
-30 C (-22 F): Days with min	5	2	1899	1
20 C (68 F): Tropical nights (min	29	39	1897	16
25 C (77 F): Days with min	7	3	1897	2
10 mm (0.39 in): Days with 10 mm or more rain	26	47	1926	38
25 mm (0.98 in): Days with 25 mm or more rain	25	17	1939	11
50 mm (1.97 in): Days with 50 mm or more rain	14	3	1935	2
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1941	1
10 cm (3.9 in): Days with 10 cm or more snowfall	4	3	1935	3

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1894.

Download the Data

Data for McArthur 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

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

McArthur Threshold Days by Year

Key Facts for McArthur Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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